Category: bromides-buliding-blocks

A multifunctional fluorescent molecule with AIE characteristics for SO₂ derivatives detection, fluorescence ink and latent fingerprint imaging was written by Li, Shifei;Wang, Lin;Ma, Yanyan;Zhu, Linlin;Lin, Weiying. And the article was included in Sensors and Actuators, B: Chemical in 2022.Related Products of 128-08-5 This article mentions the following:

With the increasing interest and demand for multifunctional fluorescence materials, a judicious and facile design is essential but still challenging. Herein, a new multifunctional fluorescence mol. (TCMn) with AIE characteristics was rationally designed and synthesized. TCMn could not only specifically recognize exogenous and endogenous SO₂ derivatives (HSO₃^– /SO₃^2-) in living cells, but also could be used as a fluorescent ink. The TCMn solution as a fluorescence ink exhibited excellent fluorescence stability and resistance to photobleaching. More importantly, TCMn was used for visualizing latent fingerprints on different object surfaces. This work provides a new strategy for mol. design and development of multifunctional fluorescent mol. materials for practical applications. In the experiment, the researchers used many compounds, for example, 1-Bromopyrrolidine-2,5-dione (cas: 128-08-5Related Products of 128-08-5).

1-Bromopyrrolidine-2,5-dione (cas: 128-08-5) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon–bromine bond is electrophilic in nature. When the molecular ion is detected, the bromine and chlorine isotope patterns are very distinct, but caution is to be exercised for certain mixed chlorinated/brominated compounds, which can look similar to homohalogen patterns.Related Products of 128-08-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Bicyclic Heterocyclic Replacement of an Aryl Amide Leading to Potent and Kinase-Selective Adaptor Protein 2-Associated Kinase 1 Inhibitors was written by Hartz, Richard A.;Ahuja, Vijay T.;Nara, Susheel J.;Kumar, C. M. Vijaya;Manepalli, Raju K. V. L. P.;Sarvasiddhi, Sarat Kumar;Honkhambe, Swarnamba;Patankar, Vidya;Dasgupta, Bireshwar;Rajamani, Ramkumar;Muckelbauer, Jodi K.;Camac, Daniel M.;Ghosh, Kaushik;Pokross, Matthew;Kiefer, Susan E.;Brown, Jeffrey M.;Hunihan, Lisa;Gulianello, Michael;Lewis, Martin;Lippy, Jonathan S.;Surti, Neha;Hamman, Brian D.;Allen, Jason;Kostich, Walter A.;Bronson, Joanne J.;Macor, John E.;Dzierba, Carolyn D.. And the article was included in Journal of Medicinal Chemistry in 2022.Recommanded Product: 2-Amino-5-bromo-4-methoxybenzoic acid This article mentions the following:

Investigation of the structure-activity relationships (SARs) of substituents on the resultant quinazoline and quinoline ring systems led to the identification of (S)- I =[R¹ = CN, R² = H], a brain-penetrant, AAK1-selective inhibitor with improved enzyme and cellular potency. The synthesis, SAR, and in vivo evaluation of a series of quinazoline and quinoline-based AAK1 inhibitors were described herein. In the experiment, the researchers used many compounds, for example, 2-Amino-5-bromo-4-methoxybenzoic acid (cas: 169045-04-9Recommanded Product: 2-Amino-5-bromo-4-methoxybenzoic acid).

2-Amino-5-bromo-4-methoxybenzoic acid (cas: 169045-04-9) belongs to organobromine compounds. Organo bromine compounds are versatile compounds and are widely used in diverse fields. Organo bromine derivatives are used in the dye sector, as an indicator in analytical chemistry (Bromothymol blue is a popular indicator). Commercially available organobromine pharmaceuticals include the vasodilator nicergoline, the sedative brotizolam, the anticancer agent pipobroman, and the antiseptic merbromin. Recommanded Product: 2-Amino-5-bromo-4-methoxybenzoic acid

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Synthesis and biological evaluation of novel sulfone derivatives containing 1,3,4-oxadiazole moiety was written by Su, Shihu;Zhou, Xia;Zhou, Yan;Liao, Guoping;Shi, Li;Yang, Xia;Zhang, Xian;Jin, Linhong. And the article was included in World Journal of Organic Chemistry in 2014.Recommanded Product: 653-92-9 This article mentions the following:

Series of novel sulfone derivatives containing 1,3,4-oxadiazole moiety I [R¹ = 4-F-2-Me, 2,5-Cl₂, 2-Br-4-F, etc.; R² = Me, Et, CH(CH₃)₂, n-propyl] and II [R² = Me, Et, CH₂Ph] were synthesized. All the target compounds were characterized by ¹H and ¹³C NMR, IR spectroscopy and elemental anal. Their antifungal activities were tested in vitro with six important phytopathogenic fungi, namely, Gibberella zeae, Fusarium oxysporum, Cytospora mandshurica, Phytophthora infestans, Paralepetopsis sasakii and Sclerotinia sclerotiorum using the mycelium growth inhibition method. Their antibacterial activities were tested in vitro with two important phytopathogenic bacteria, namely, Xanthomonas oryzae and Ralstonia solanacearum from tobacco bacterial by the turbid meter test. Compounds I [R¹ = 2-Cl-4-F, 4-CF₃; R² = Me] and II [R² = Me, Et] exhibited the most potent inhibition against R. solanacearum and X. oryzae with 50% inhibition concentration (EC₅₀) from 1.97 to 7.75 μg/mL and 0.45 to 0.52 μg/mL, resp. Their antifungal tests indicated that among target compounds exhibited good antifungal activities against six kinds of fungi, especially against S. sclerotiorum with EC₅₀ from 3.71 to 17.44 μg/mL. In vivo antibacterial activities tests demonstrated that the controlling effect of compound II [R² = Me] (81.9%) against rice bacterial leaf blight were better than that of bismerthiazol (50.8%) and thiodiazole-copper (44.7%). The results also demonstrated that compounds I [R¹ = 2-Cl-4-F; R² = Me] and II [R² = Me, Et] had a better antifungal and antibacterial activity, with good characteristics of broad spectrum. The structure-activity relationships were also discussed. In the experiment, the researchers used many compounds, for example, Methyl 2-bromo-4-fluorobenzoate (cas: 653-92-9Recommanded Product: 653-92-9).

Methyl 2-bromo-4-fluorobenzoate (cas: 653-92-9) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. Bromine-containing agents predominate because not only are they more efficient than similar chlorine-containing species, but also the high atomic weight of bromine ensures that it is present in a high mass fraction within most organobromine compounds.Recommanded Product: 653-92-9

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Hypolipidemic alkoxybenzoic acids was written by DeVries, Vern G.;Moran, Daniel B.;Allen, George R.;Riggi, Stephen J.. And the article was included in Journal of Medicinal Chemistry in 1976.SDS of cas: 56523-59-2 This article mentions the following:

A series of �0 p-alkoxybenzoic acids (I) with aromatic ring substituents or modified alkyl or unsaturated chains (R1), prepared by alkylation of the appropriate hydroxybenzoate ester followed by saponification, was screened in rats for serum-sterol and triglyceride lowering activity. Alkyl chain substituents such as chloro and oximino enhanced activity, while azido, thiol, and some alkylthio groups resulted in retention of activity. Some alkylthio substituents on the alkyl chain and aryl ring substituents abolished sterol-lowering activity. The effect of alkyl chain branching was variable, while unsaturation had no adverse effect on activity except when located near either end of the chain. In the experiment, the researchers used many compounds, for example, 15-Bromopentadecanoic acid (cas: 56523-59-2SDS of cas: 56523-59-2).

15-Bromopentadecanoic acid (cas: 56523-59-2) belongs to organobromine compounds. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. For many applications, organobromides represent a compromise of reactivity and cost.SDS of cas: 56523-59-2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Synthesis of HIV NNRTI Doravirine Analogues via Visible-Light Photoredox Decarboxylative Cross-Coupling was written by Suen, Linda M.;Wang, Cheng;Hunter, David N.;Mitchell, Helen J.;Converso, Antonella;ElMarrouni, Abdellatif. And the article was included in Synthesis in 2018.Safety of Methyl 4-bromo-2-fluorobenzoate This article mentions the following:

A C(sp ²)-C(sp ³) decarboxylative cross-coupling reaction utilizing dual nickel and photoredox catalysis for rapid parallel synthesis of diverse C-ring analogs of the HIV NNRTI clin. candidate doravirine is developed and described herein. This protocol features an alkylation with readily available and inexpensive Me bromoacetate followed by hydrolysis to prepare an advanced doravirine intermediate, which undergoes decarboxylative cross-coupling with a variety of aryl and heteroaryl bromides. The mildness, broad applicability, and sustainability of the current methodol. are improvements over previously reported procedures and allow for rapid parallel synthesis of analogs. The optimization and scope of this method are reported. In the experiment, the researchers used many compounds, for example, Methyl 4-bromo-2-fluorobenzoate (cas: 179232-29-2Safety of Methyl 4-bromo-2-fluorobenzoate).

Methyl 4-bromo-2-fluorobenzoate (cas: 179232-29-2) belongs to organobromine compounds. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. The principal reactions for organobromides include dehydrobromination, Grignard reactions, reductive coupling, and nucleophilic substitution.Safety of Methyl 4-bromo-2-fluorobenzoate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Kinetic solvent isotope effect, solvent reorganization and the Sn1-Sn2 mechanism was written by Treindl, L.;Robertson, Ross Elmore;Sugamori, S. E.. And the article was included in Canadian Journal of Chemistry in 1969.Recommanded Product: 1-Bromo-4-methoxybutane This article mentions the following:

The temperature dependence of the rates of solvolysis were determined in D2O for tert-Bu chloride, 2,2-dibromopropane, 2-bromo-2-chloropropane, and 2-chloro-2-methylpropyl Me ether, and corresponding values of ΔHîŒ? ΔSîŒ? and ΔCp are derived. Values of ΔHîŒ?and ΔSîŒ?from the solvolysis of 7 other halides and 2 benzenesulfonates were estimated from rate determinations at 2 temperatures in D2O. A comparison of these values with terms from corresponding experiments in H2O provide values of δ1ΔGîŒ? δ1ΔHîŒ? and δ1ΔSîŒ?characterizing the kinetic solvent isotope effect. While δ1ΔGîŒ?appears to have about the same value for a wide range of halides of different structure irresp. of the probable mechanism of reaction, systematic differences in δ1ΔHîŒ?and δ1ΔSîŒ?differentiate those reacting by an SN2 mechanism from those reacting by an SN1 mechanism. This difference is in the direction suggesting a loosening of solvent structure in the activation process in agreement with indications obtained from the corresponding values of the heat capacity of activation. In the experiment, the researchers used many compounds, for example, 1-Bromo-4-methoxybutane (cas: 4457-67-4Recommanded Product: 1-Bromo-4-methoxybutane).

1-Bromo-4-methoxybutane (cas: 4457-67-4) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. Many of the alkyl bromine derivatives are excellent alkylating agents since bromides are good leaving groups. Tribromides, like tetrabutylammonium tribromide, are used as a solid source of bromine. N-bromosuccimide (NBS) is used for the selective bromination of allylic bonds.Recommanded Product: 1-Bromo-4-methoxybutane

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Facile access to 4-aryl-2(5H)-furanones by Suzuki cross coupling: efficient synthesis of rubrolides C and E was written by Boukouvalas, John;Lachance, Nicolas;Ouellet, Michel;Trudeau, Martin. And the article was included in Tetrahedron Letters in 1998.Recommanded Product: 3,5-Dibromo-4-methoxybenzaldehyde This article mentions the following:

The Pd(0)-catalyzed cross coupling between 4-bromo-2(5H)-furanones and arylboronic acids provides the corresponding 4-aryl-2(5H)-furanones in yields of 61-85%. By using this method in conjunction with furanolate chem., the marine antibiotics rubrolides C (I; X = Br) and E (I; X = H) were synthesized in highly efficient fashion (4 steps, 61 and 56% overall yield, resp.) from β-tetronic acid. In the experiment, the researchers used many compounds, for example, 3,5-Dibromo-4-methoxybenzaldehyde (cas: 108940-96-1Recommanded Product: 3,5-Dibromo-4-methoxybenzaldehyde).

3,5-Dibromo-4-methoxybenzaldehyde (cas: 108940-96-1) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. When the molecular ion is detected, the bromine and chlorine isotope patterns are very distinct, but caution is to be exercised for certain mixed chlorinated/brominated compounds, which can look similar to homohalogen patterns.Recommanded Product: 3,5-Dibromo-4-methoxybenzaldehyde

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Water enables an asymmetric cross reaction of α-keto acids with α-keto esters for the synthesis of quaternary isotetronic acids was written by Chen, Ping;Wang, Kai;Zhang, Boyu;Guo, Wengang;Liu, Yan;Li, Can. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2019.Recommanded Product: 57293-19-3 This article mentions the following:

A water promoted asym. aldol/lactonization/enolization cascade reaction of α-keto acids R¹CH₂C(O)C(O)OH (R¹ = H, Me) and α-keto esters R²C(O)C(O)OC(CH₃)₃ [R² = 4-FC₆H₄(CH₂)₂, CH₂=CH(CH₂)₂, C₆H₅CH₂O(CH₂)₃, etc.] was developed, affording the first general protocol for the construction of chiral quaternary isotetronic acids I with excellent enantioselectivity. Theor. results indicate that intramol. ionized enamine intermediates stabilized by water generate zwitterionic transition states in a lower activation energy and higher face selectivity, resulting in high activity and chemo- and enantioselectivity. In the experiment, the researchers used many compounds, for example, 1-(3-Bromopropyl)-4-methoxybenzene (cas: 57293-19-3Recommanded Product: 57293-19-3).

1-(3-Bromopropyl)-4-methoxybenzene (cas: 57293-19-3) belongs to organobromine compounds. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon–bromine bond is electrophilic, i.e. alkyl bromides are alkylating agents. In the pharmaceutical industry organo bromine derivatives are used as sedatives, vasodilators, antiseptic agents, and anticancer agents.Recommanded Product: 57293-19-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Nonpolar Nucleoside Mimics as Active Substrates for Human Thymidine Kinases was written by Jarchow-Choy, Sarah K.;Sjuvarsson, Elena;Sintim, Herman O.;Eriksson, Staffan;Kool, Eric T.. And the article was included in Journal of the American Chemical Society in 2009.HPLC of Formula: 452-62-0 This article mentions the following:

We describe the use of nonpolar nucleoside analogs of systematically varied size and shape to probe the mechanisms by which the two human thymidine kinases (TK1 and TK2) recognize and phosphorylate their substrate, thymidine. Comparison of polar thymidine with a nonpolar isostere, 2,4-difluorotoluene deoxyriboside, as substrates for the two enzymes establishes that TK1 requires electrostatic complementarity to recognize the thymine base with high efficiency. Conversely, TK2 does not and phosphorylates the hydrophobic shape mimic with efficiency nearly the same as the natural substrate. To test the response to nucleobase size, thymidine-like analogs were systematically varied by replacing the 2,4 substituents on toluene with hydrogen and the halogen series (H, F, Cl, Br, I). Both enzymes showed a distinct preference for substrates having the natural size. To examine the shape preference, we prepared four mono- and difluorotoluene deoxyribosides with varying positions of substitutions. While TK1 did not accept these nonpolar analogs as substrates, TK2 did show varying levels of phosphorylation of the shape-varied set. This latter enzyme preferred toluene nucleoside analogs having steric projections at the 2 and 4 positions, as is found in thymine, and strongly disfavored substitution at the 3-position. Steady-state kinetics measurements showed that the 4-fluoro compound (7) had an apparent V_max/K_m value within 14-fold of the natural substrate, and the 2,4-difluoro compound (1), which is the closest isostere of thymidine, had a value within 2.5-fold. The results establish that nucleoside recognition mechanisms for the two classes of enzymes are very different. On the basis of these data, nonpolar nucleosides are likely to be active in the nucleotide salvage pathway in human cells, suggesting new designs for future bioactive mols. In the experiment, the researchers used many compounds, for example, 3-Bromo-4-fluorotoluene (cas: 452-62-0HPLC of Formula: 452-62-0).

3-Bromo-4-fluorotoluene (cas: 452-62-0) belongs to organobromine compounds. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon–bromine bond is electrophilic, i.e. alkyl bromides are alkylating agents. The principal reactions for organobromides include dehydrobromination, Grignard reactions, reductive coupling, and nucleophilic substitution.HPLC of Formula: 452-62-0

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Substituent effects. 6. Charged groups: a simple extension of the Hammett equation was written by Hoefnagel, A. J.;Hoefnagel, M. A.;Wepster, B. M.. And the article was included in Journal of Organic Chemistry in 1978.COA of Formula: C8H7BrO2 This article mentions the following:

Extensive exptl. data show that the Hammett equation fails for charged substituents (poles); variations of σ over >1 unit are common. Addition of the Bjerrum field effect term, δ^B, yields a more general equation which holds satisfactorily for poles (at zero ionic strength) and dipoles; δ^B is a Coulombic term from classical equations, characteristically containing the dielec. constant of the solvent, D_s. Examples are given where only the Bjerrum term counts, among which are acidic ester hydrolysis and 4-CH₂CH₂NMe₃⁺ substitution. Where δ^B â‰?0 the general equation reduces to the form of the Hammett equation. With dipoles this holds almost generally (gas-phase data being 1 of the exceptions); with poles this holds, for instance, for S_N1 reactions and for reactivities at high ionic strengths. The data are also discussed in relation to the meta/para ratio of the inductive effect, the Kirkwood-Westheimer model, the Hine equation, through-resonance effects (σ^L+ and σ^L-), naphthalene derivatives and ortho substitution. The applicability of δ^B in aliphatic systems is illustrated and an extended Taft equation is given. The dichotomous general equation is compatible with a 2-stage model of reactivities. For example, in the first (ionization) stage of the dissociation of XH the X-H distance increases to give a pair of ions or a discrete ion pair X^–H⁺; in the second stage the proton goes to infinity. The 1st stage is structure dependent and equally so for poles and dipoles, and the 2nd stage is structure independent and D_s is applicable. The Kirkwood-Westheimer cavity model can be parametrized so as to conform with the Bjerrum model. This reevaluation of the cavity model is supported by exptl. evidence. In the experiment, the researchers used many compounds, for example, 3-(Bromomethyl)benzoic acid (cas: 6515-58-8COA of Formula: C8H7BrO2).

3-(Bromomethyl)benzoic acid (cas: 6515-58-8) belongs to organobromine compounds. Organo bromine compounds are versatile compounds and are widely used in diverse fields. Organo bromine derivatives are used in the dye sector, as an indicator in analytical chemistry (Bromothymol blue is a popular indicator). When the molecular ion is detected, the bromine and chlorine isotope patterns are very distinct, but caution is to be exercised for certain mixed chlorinated/brominated compounds, which can look similar to homohalogen patterns.COA of Formula: C8H7BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary