Tag: 200-300

Synthesis of N-alkoxyindol-2-ones by copper-catalyzed intramolecular N-arylation of hydroxamates was written by Kukosha, Tatyana;Trufilkina, Nadezhda;Katkevics, Martins. And the article was included in Synlett in 2011.Synthetic Route of C7H5Br2F This article mentions the following:

The first example of copper-catalyzed intramol. N-arylation of hydroxamic acid derivatives is presented. Based on this transformation a new method for the synthesis of N-alkoxyindol-2-ones from 2-(2-bromoaryl)acetylhydroxamates has been developed. E.g., CuBr₂ catalyzed the intramol. N-arylation of hydroxamate (I) to give 91% N-methoxyindol-2-one (II). The reaction conditions tolerate standard hydroxyl protecting groups on the hydroxylamine moiety and are also applicable for the synthesis of six-membered N-alkoxybenzolactams. In the experiment, the researchers used many compounds, for example, 2-Bromo-4-fluorobenzylbromide (cas: 61150-57-0Synthetic Route of C7H5Br2F).

2-Bromo-4-fluorobenzylbromide (cas: 61150-57-0) 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). In the pharmaceutical industry organo bromine derivatives are used as sedatives, vasodilators, antiseptic agents, and anticancer agents.Synthetic Route of C7H5Br2F

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Synthesis and crystal structures of two new selenides bearing 3-hydroxyphthalimidine was written by Zhang, Wanxuan;Yu, Haitao;Meng, Jiben;Matsuura, Teruo. And the article was included in Journal of Molecular Structure in 2003.Safety of N-(5-Bromopentyl)phthalimide This article mentions the following:

The title compounds (I; n = 3, 5) were prepared and characterized by elemental and spectral analyses, and their structures were confirmed by x-ray single crystal diffraction. In both crystals strong hydrogen bonds (O-H···O) were observed In the experiment, the researchers used many compounds, for example, N-(5-Bromopentyl)phthalimide (cas: 954-81-4Safety of N-(5-Bromopentyl)phthalimide).

N-(5-Bromopentyl)phthalimide (cas: 954-81-4) 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. Safety of N-(5-Bromopentyl)phthalimide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Synthesis of medium ring heterocycles using an intramolecular Heck reaction was written by Arnold, Leggy A.;Luo, Wenchen;Guy, R. Kiplin. And the article was included in Organic Letters in 2004.Name: Ethyl (2-bromophenyl)acetate This article mentions the following:

Historically, general convergent syntheses of medium ring heterocycles have been difficult to develop. Herein, we describe the synthesis of five classes of heterocycles: dihydrodibenz[b,f]azepine, -oxocine, and -thiocine and dibenz[b,f]azepine and -oxepine using a strategy of alkylation followed by highly selective intramol. Heck arylation reaction. The hetero-tricyclic compounds were available in only two steps starting from com. available starting materials. In the experiment, the researchers used many compounds, for example, Ethyl (2-bromophenyl)acetate (cas: 2178-24-7Name: Ethyl (2-bromophenyl)acetate).

Ethyl (2-bromophenyl)acetate (cas: 2178-24-7) 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.Name: Ethyl (2-bromophenyl)acetate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Nickel-Catalyzed Asymmetric Negishi Cross-Coupling of Secondary Allylic Chlorides with Alkylzincs was written by Son, Sunghee;Fu, Gregory C.. And the article was included in Journal of the American Chemical Society in 2008.Product Details of 57293-19-3 This article mentions the following:

Complementing previous advances in allylation chem., an effective nickel/Pybox catalyst for regioselective asym. Negishi cross-couplings of racemic secondary allylic chlorides with readily available organozinc halides has been developed. The method has been applied in two key steps of a formal total synthesis of fluvirucinine A₁. In the experiment, the researchers used many compounds, for example, 1-(3-Bromopropyl)-4-methoxybenzene (cas: 57293-19-3Product Details of 57293-19-3).

1-(3-Bromopropyl)-4-methoxybenzene (cas: 57293-19-3) 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.Product Details of 57293-19-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Copper-Catalyzed/Promoted Cross-coupling of gem-Diborylalkanes with Nonactivated Primary Alkyl Halides: An Alternative Route to Alkylboronic Esters was written by Zhang, Zhen-Qi;Yang, Chu-Ting;Liang, Lu-Jun;Xiao, Bin;Lu, Xi;Liu, Jing-Hui;Sun, Yan-Yan;Marder, Todd B.;Fu, Yao. And the article was included in Organic Letters in 2014.Computed Properties of C13H14BrNO2 This article mentions the following:

The first copper-catalyzed/promoted sp³-C Suzuki-Miyaura coupling reaction of gem-diborylalkanes with nonactivated electrophilic reagents is reported. Not only 1,1-diborylalkanes but also some other gem-diborylalkanes can be coupled with nonactivated primary alkyl halides, offering a new method for sp³C-sp³C bond formation and, simultaneously, providing a new strategy for the synthesis of alkylboronic esters. In the experiment, the researchers used many compounds, for example, N-(5-Bromopentyl)phthalimide (cas: 954-81-4Computed Properties of C13H14BrNO2).

N-(5-Bromopentyl)phthalimide (cas: 954-81-4) 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. alpha-Bromoesters are employed in the Reformatsky reaction for the synthesis of beta-hydroxyesters. The principal reactions for organobromides include dehydrobromination, Grignard reactions, reductive coupling, and nucleophilic substitution.Computed Properties of C13H14BrNO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Synthesis of 7-aminoheptanoic acid hydrochloride was written by Xu, Juan-juan;Li, Jie-mei;Li, Xiao-zhu;Chen, Jia-shu. And the article was included in Xiandai Shipin Keji in 2010.Formula: C13H14BrNO2 This article mentions the following:

The synthesis of the target compound (i.e., 7-aminoheptanoic acid hydrochloride) was achieved by a sequence involving a reaction of dibromopentane with potassium phthalimide, formation of 2-(5-bromopentyl)-1H-isoindole-1,3(2H)-dione, reaction with propanedioic acid ester and formation of 2-[5-(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)pentyl]propanedioic acid 1,3-di-Et ester and a subsequent hydrolysis and decarboxylation. The product was obtained in 55% overall yield and the structure was confirmed by ¹H-NMR, LC-ELSD-UV-DAD-MS. In the experiment, the researchers used many compounds, for example, N-(5-Bromopentyl)phthalimide (cas: 954-81-4Formula: C13H14BrNO2).

N-(5-Bromopentyl)phthalimide (cas: 954-81-4) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. Organobromine compounds have fallen under increased scrutiny for their environmental impact. 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.Formula: C13H14BrNO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Cleavable Comonomers for Chemically Recyclable Polystyrene: A General Approach to Vinyl Polymer Circularity was written by Kiel, Gavin R.;Lundberg, David J.;Prince, Elisabeth;Husted, Keith E. L.;Johnson, Alayna M.;Lensch, Valerie;Li, Sipei;Shieh, Peyton;Johnson, Jeremiah A.. And the article was included in Journal of the American Chemical Society in 2022.Application In Synthesis of Methyl 2-bromo-4-fluorobenzoate This article mentions the following:

Many common polymers, especially vinyl polymers, are inherently difficult to chem. recycle and are environmentally persistent. The introduction of low levels of cleavable comonomer additives into existing vinyl polymerization processes could facilitate the production of chem. deconstructable and recyclable variants with otherwise equivalent properties. Here, we report thionolactones that serve as cleavable comonomer additives for the chem. deconstruction and recycling of vinyl polymers prepared through free radical polymerization, using polystyrene (PS) as a model example. Deconstructable PS of different molar masses (~20-300 kDa) bearing varied amounts of statistically incorporated thioester backbone linkages (2.5-55 mol %) can be selectively depolymerized to yield well-defined thiol-terminated fragments (<10 kDa) that are suitable for oxidative repolymn. to generate recycled PS of nearly identical molar mass to the parent material, in good yields (80-95%). A theor. model is provided to generalize this molar mass memory effect. Notably, the thermomech. properties of deconstructable PS bearing 2.5 mol % of cleavable linkages and its recycled product are similar to those of virgin PS. The additives were also shown to be effective for deconstruction of a cross-linked styrenic copolymer and deconstruction and repolymn. of a polyacrylate, suggesting that cleavable comonomers may offer a general approach toward circularity of many vinyl (co)polymers. In the experiment, the researchers used many compounds, for example, Methyl 2-bromo-4-fluorobenzoate (cas: 653-92-9Application In Synthesis of Methyl 2-bromo-4-fluorobenzoate).

Methyl 2-bromo-4-fluorobenzoate (cas: 653-92-9) 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. In the pharmaceutical industry organo bromine derivatives are used as sedatives, vasodilators, antiseptic agents, and anticancer agents.Application In Synthesis of Methyl 2-bromo-4-fluorobenzoate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Comparison of QSAR predictions with fish toxicity screening data for 110 phenols was written by Lipnick, Robert L.;Bickings, Charlene K.;Johnson, David E.;Eastmond, David A.. And the article was included in ASTM Special Technical Publication in 1985.Safety of 4-Bromo-2-chloro-6-nitrophenol This article mentions the following:

A comparison was made between the predicted 96-h guppy median lethal concentration of 110 phenols based upon quant. structure-activity relationship (QSAR) equations of J. Saarikoski and M. Viluksela (1982) and the data from 936 toxicity screening tests for these chems. Test data on up to 8 species of freshwater fishes were available per compound Overall, the exptl. toxicity data on these chem. were consistent with the QSAR predictions. The 110 phenols occupy a considerably larger range of spanned substituent space than the QSAR training set. One compound, 4-aminophenol  [123-30-8] exhibited lethality at test concentrations of 35 times below that predicted. The increased fish toxicity of this compound is explained in terms of a proelectrophilic mol. mechanism, in which the parent compound is metabolically oxidized to a para quinoid structure. The resulting electrophilic metabolite is susceptible to attack by nucleophilic moieties present in biol. macromols. leading to covalent bond formation and inhibition of biochem. processes. In the experiment, the researchers used many compounds, for example, 4-Bromo-2-chloro-6-nitrophenol (cas: 58349-01-2Safety of 4-Bromo-2-chloro-6-nitrophenol).

4-Bromo-2-chloro-6-nitrophenol (cas: 58349-01-2) 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. 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.Safety of 4-Bromo-2-chloro-6-nitrophenol

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

A General Catalytic Route to Isoindolinones and Tetrahydroisoquinolines: Application in the Synthesis of (±)-Crispine A was written by Dhanasekaran, Sivasankaran;Bisai, Vishnumaya;Unhale, Rajshekhar A.;Suneja, Arun;Singh, Vinod K.. And the article was included in Organic Letters in 2014.Recommanded Product: 1-(2-Bromoethyl)-4-methoxybenzene This article mentions the following:

An unprecedented highly efficient Lewis acid catalyzed one-pot cascade has been demonstrated as a general catalytic system for the synthesis of diversely substituted isoindolinones, e.g., I (R = 2-MeOC₆H₄, Ph, 4-BrC₆H₄, etc.), and tetrahydroisoquinolines, e.g, II. The cascade effects one C-C and two C-N bond-forming events in one pot. Several interesting transformations of the products into valuable synthetic intermediates are featured with the successful total synthesis of (±)-crispine A (III). In the experiment, the researchers used many compounds, for example, 1-(2-Bromoethyl)-4-methoxybenzene (cas: 14425-64-0Recommanded Product: 1-(2-Bromoethyl)-4-methoxybenzene).

1-(2-Bromoethyl)-4-methoxybenzene (cas: 14425-64-0) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. Organobromine compounds have fallen under increased scrutiny for their environmental impact. 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: 1-(2-Bromoethyl)-4-methoxybenzene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Chemical screening of novel strigolactone agonists that specifically interact with DWARF14 protein was written by Yasui, Rei;Seto, Yoshiya;Ito, Shinsaku;Kawada, Kojiro;Itto-Nakama, Kaori;Mashiguchi, Kiyoshi;Yamaguchi, Shinjiro. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2019.Application of 615-55-4 This article mentions the following:

Strigolactones (SLs) are a class of plant hormones that regulate shoot branching as well as being known as root-derived signals for parasitic and symbiotic interactions. The phys. interaction between SLs and the DWARF14 (D14) receptor family can be examined by differential scanning fluorimetry (DSF) that monitors the changes in protein melting temperature (Tm). The Tm of D14 is lowered by bioactive SLs in DSF anal. In this report, we screened the compounds that lower the Tm of Arabidopsis D14 (AtD14) as potential candidates for SL agonists using DSF anal. Subsequent physiol. analyzes revealed that 113D10 acts as a novel SL agonist in a D14-dependent manner. Intriguingly, 113D10 has a chem. structure different from natural SLs in that it does not possess an enol ether bond that connects to a methylbutenolide moiety. Moreover, 113D10 does not stimulate seed germination of root parasitic plants. Accordingly, 113D10 can be a useful tool for SL studies and agricultural applications. In the experiment, the researchers used many compounds, for example, 3,4-Dibromoaniline (cas: 615-55-4Application of 615-55-4).

3,4-Dibromoaniline (cas: 615-55-4) 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. 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.Application of 615-55-4

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary