Tag: M.W=350-400

Liu, Juncheng published the artcileInvestigation on the solubilization of organic dyes and micro-polarity in AOT water-in-CO₂ microemulsions with fluorinated co-surfactant by using UV-Vis spectroscopy, SDS of cas: 518-67-2, the publication is Journal of Supercritical Fluids (2004), 32(1-3), 97-103, database is CAplus.

It was found that the dyes thymol blue, dimidium bromide, and methyl orange, which are not soluble in pure supercritical CO₂, could be conveniently solubilized in AOT water-in-CO₂ reverse microemulsions with 2,2,3,3,4,4,5,5-octafluoro-1-pentanol as co-surfactant. The solubilities of the dyes in the microemulsions were measured successfully by using a UV-visible spectroscopy method newly established in our laboratory; besides that, for a given temperature, a critical micelle pressure at which formation of AOT water-in-CO₂ reverse micelles starts, was determined in term of the effect of pressure on the absorption intensity of the dyes in the microemulsions. Furthermore, the micro-polarity environment of the AOT water-in-CO₂ reverse microemulsions was investigated systematically according to the shift of the solvatochromic probes methyl orange and dimidium bromide with varying water content by using UV-visible spectroscopy.

Journal of Supercritical Fluids published new progress about 518-67-2. 518-67-2 belongs to bromides-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Benzene, name is Dimidium bromide, and the molecular formula is C20H18BrN3, SDS of cas: 518-67-2.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Matsunaga, Yoichiro published the artcileReactions of 3-isopropenyl- and 3-acetyltropolone with quaternary ammonium tribromides, Related Products of bromides-buliding-blocks, the publication is Bulletin of the Chemical Society of Japan (1992), 65(1), 295-7, database is CAplus.

Treatments of 3-isopropenyltropolone (I) with quaternary ammonium tribromides in THF afforded 3-methyl-8H-cyclohepta[b]furan-8-one (II). The reactions in methanol-dichloromethane gave 7-bromo-3-methyl-8H-cyclohepta[b]furan-8-one. Bromination of 3-acetyltropolone with the tribromides in THF produced 3-(bromoacetyl)tropolone, whereas the reaction in the methanolic solvent gave 7-bromo- and 5,7-dibromo-substituted 3-acetyltropolones. The brominations of 4′-hydroxyacetophenone were also carried out.

Bulletin of the Chemical Society of Japan published new progress about 111865-47-5. 111865-47-5 belongs to bromides-buliding-blocks, auxiliary class Benzenes, name is Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, and the molecular formula is C10H16Br3N, Related Products of bromides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Ito, Akihiro published the artcileFacile Synthesis, Crystal Structures, and High-Spin Cationic States of All-para-Brominated Oligo(N-phenyl-m-aniline)s, Related Products of bromides-buliding-blocks, the publication is Journal of Organic Chemistry (2002), 67(2), 491-498, database is CAplus and MEDLINE.

Syntheses of brominated oligoanilines I and II were achieved in a one-pot procedure from the parent nonbrominated oligomers and benzyltrimethylammonium tribromide [(BTMA)Br₃]. An X-ray crystallog. anal. revealed that II has a U-shaped structure, suggesting that the analogous polymer easily adopts helical structures. Furthermore, the redox properties were investigated by the UV-vis and EPR measurements. It was confirmed that the both I and II can be oxidized into the dications I²⁺ and II²⁺ with triplet spin-multiplicity.

Journal of Organic Chemistry published new progress about 111865-47-5. 111865-47-5 belongs to bromides-buliding-blocks, auxiliary class Benzenes, name is Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, and the molecular formula is C10H16Br3N, Related Products of bromides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Lin, Tzu-Chau published the artcileSynthesis and two-photon properties of a multipolar chromophore containing indenofluorenyl units, COA of Formula: C10H16Br3N, the publication is Tetrahedron Letters (2009), 50(2), 182-185, database is CAplus.

A new multipolar fluorophore derived from triphenylamine as the core with diphenylaminoindenofluorenyl moieties incorporated at the peripheral positions has been synthesized and exptl. shown to possess strong two-photon absorptivities in near-IR region and intense upconverted visible emission under the irradiation of femtosecond laser pulses.

Tetrahedron Letters published new progress about 111865-47-5. 111865-47-5 belongs to bromides-buliding-blocks, auxiliary class Benzenes, name is Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, and the molecular formula is C10H16Br3N, COA of Formula: C10H16Br3N.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Feng, Xing published the artcilePyrene-Based Y-shaped Solid-State Blue Emitters: Synthesis, Characterization, and Photoluminescence, HPLC of Formula: 111865-47-5, the publication is Chemistry – An Asian Journal (2012), 7(12), 2854-2863, S2854/1-S2854/29, database is CAplus and MEDLINE.

A series of pyrene-based Y-shaped blue emitters, namely, 7-tert-butyl-1,3-diarylpyrenes 4 were synthesized by the Suzuki cross-coupling reaction of 7-tert-butyl-1,3-dibromopyrene with a variety of p-substituted phenylboronic acids in good to excellent yields. These compounds were fully characterized by X-ray crystallog., UV/Vis absorption and fluorescence spectroscopy, DFT calculations, thermogravimetric anal., and differential scanning calorimetry. Single-crystal X-ray anal. revealed that the Y-shaped arylpyrenes exhibited a low degree of π stacking owing to the steric effect of the bulky tert-Bu group in the pyrene ring at the 7-position, and thus, the intermol. π-π interactions were effectively suppressed in the solid state. Despite the significantly twisted nonplanar structures, these mols. still displayed efficient intramol. charge-transfer emissions with clear solvatochromic shifts on increasing solvent polarity. An intriguing fact is that all of these mols. show highly blue emissions with excellent quantum yields in the solid state. Addnl., the two compounds containing the strongest electron-accepting groups, CN (4 d) and CHO (4 f), possess high thermal stability, which, together with their excellent solid-state fluorescence efficiency, makes them promising potential blue emitters in organic light-emitting device applications.

Chemistry – An Asian Journal published new progress about 111865-47-5. 111865-47-5 belongs to bromides-buliding-blocks, auxiliary class Benzenes, name is Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, and the molecular formula is C10H16Br3N, HPLC of Formula: 111865-47-5.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Cory, Michael published the artcileInhibitors of histone methylation, SDS of cas: 518-67-2, the publication is Chemico-Biological Interactions (1974), 9(4), 253-9, database is CAplus and MEDLINE.

Two classes of inhibitors of histone methyltransferase I from calf thymus were studied. High concentrations (≥10mM) of various alkyl or aralkyl amines and polyamines were inhibitory to the enzyme. Spermine and spermidine were among the most potent compounds in this group. The best monoamine inhibitor was 2-phenylethylamine, which gave 47% inhibition at 10mM. The substituted phenanthridinium compound ethidium bromide was also an inhibitor of the enzyme. A number of analogs of ethidium bromide were tested, and the most potent compound gave 50% inhibition at 0.125mM. S-adenosyl-L-methionine showed competitive inhibition of the enzyme as determined from a Lineweaver-Burk plot, whereas ethidium bromide was noncompetitive.

Chemico-Biological Interactions published new progress about 518-67-2. 518-67-2 belongs to bromides-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Benzene, name is Dimidium bromide, and the molecular formula is C20H18BrN3, SDS of cas: 518-67-2.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Wang, Bing Hui published the artcileInhibition of eukaryote protein kinases by isoquinoline and oxazine alkaloids, SDS of cas: 518-67-2, the publication is Planta Medica (1997), 63(6), 494-498, database is CAplus and MEDLINE.

The aporphine isoquinoline alkaloid apomorphine is a potent inhibitor of the catalytic subunit (cAK) of rat liver cAMP-dependent protein kinase (PKA), myosin light chain kinase (MLCK), and Ca²⁺– and phospholipid-dependent protein kinase C (PKC) (IC₅₀ values 1, 11, and 8 μM, resp.). However, a number of O-methylated analogs of apomorphine are inactive or poor inhibitors of cAK. The benzophenanthridine isoquinoline alkaloid sanguinarine is a potent inhibitor of cAK but is a relatively poor inhibitor of PKC (IC₅₀ values 6 and 217 μM, resp.). However a number of methylated analogs of sanguinarine are inactive as cAK inhibitors. The aporphine isoquinoline alkaloids (+)-boldine and bulbocapnine are noncompetitive inhibitors of MLCK with respect to both peptide substrate and ATP. The inhibition of cAK, MLCK, and PKC by apomorphine and sanguinarine is competitive with respect to ATP as substrate. The oxazine alkaloids darrow red, nile blue A, and oxazine 170 are variously effective as inhibitors of cAK, MLCK, PKC, and CDPK (IC₅₀ values 4-65 μM). Ca²⁺ binds to apomorphine and (+)-boldine which, together with nile blue A and oxazine 170, are potent inhibitors of calmodulin (CaM)-dependent MLCK (IC₅₀ values 11, 12, 4, and 7 μM, resp.), and interact with dansyl-CaM.

Planta Medica published new progress about 518-67-2. 518-67-2 belongs to bromides-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Benzene, name is Dimidium bromide, and the molecular formula is C3H5BN2O2, SDS of cas: 518-67-2.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Jordan, Alfonzo D. published the artcileEfficient Conversion of Substituted Aryl Thioureas to 2-Aminobenzothiazoles Using Benzyltrimethylammonium Tribromide, Safety of Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, the publication is Journal of Organic Chemistry (2003), 68(22), 8693-8696, database is CAplus and MEDLINE.

The reaction of mol. bromine (Br₂) with arylthioureas is known to produce 2-aminobenzothiazoles (Hugerschoff reaction). The authors show here that benzyltrimethylammonium tribromide, a stable, crystalline organic ammonium tribromide (OATB), can be readily utilized as an alternative electrophilic bromine source. It is easier to control the stoichiometry of addition with an OATB, which minimizes aromatic bromination caused by excess reagent. The authors have developed a direct procedure from isothiocyanates and amines using tetrabutylammonium thiocyanate (Bu₄NSCN) and PhCH₂NMe₃Br₃ to afford functionalized 2-aminobenzothiazoles.

Journal of Organic Chemistry published new progress about 111865-47-5. 111865-47-5 belongs to bromides-buliding-blocks, auxiliary class Benzenes, name is Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, and the molecular formula is C10H16Br3N, Safety of Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Liu, Chang-chun published the artcileFacile synthesis of 3,4-dihydroxybenzaldehyde in ionic liquid, Application of Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, the publication is Gaoxiao Huaxue Gongcheng Xuebao (2011), 25(4), 724-728, database is CAplus.

A facile one-pot method for synthesis of 3,4-dihydroxybenzaldehyde (I) from p-hydroxybenzaldehyde (II) via bromination and hydrolysis in ionic liquid was studied. Under the conditions of the molar ratio of II/ionic liquid 1-butyl-3-methylimidazolium tribromide ([bmim]Br₃) 1:1, reaction temperature 20°, reaction time 30 min and solvent-free, the II was brominated with ionic liquid [bmim]Br₃ to give 3-bramo-4-hydroxybenzaldehyde with 99.7% selectivity; and then without separation, the product of bromination was further hydrolyzed with NaOH aqueous solution in ionic liquid 1-butyl-3-methylimidazolium bromide ([bmim]Br), which is formed from [bmim]Br₃ after the process of bromination, to form I with 84.7% yield and 99.3% purity under the conditions as follows: the NaOH dosage is 1.25 mol/(mol II)^-1, reaction temperature is 100° and reaction time is 2 h. The ionic liquid can be reused at least six times without significant decrease of the yield and purity of I. This method has the advantages of convenience, mild reaction conditions, good yield, high selectivity, solvent-free and environmental friendliness.

Gaoxiao Huaxue Gongcheng Xuebao published new progress about 111865-47-5. 111865-47-5 belongs to bromides-buliding-blocks, auxiliary class Benzenes, name is Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, and the molecular formula is C10H16Br3N, Application of Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Diemer, Vincent published the artcileEfficient and Complementary Methods Offering Access to Synthetically Valuable 1,2-Dibromobenzenes, Quality Control of 1075719-78-6, the publication is European Journal of Organic Chemistry (2011), 327-340, S327/1-S327/51, database is CAplus.

1,2-Dibromobenzenes are highly valuable precursors for various organic transformations, in particular, reactions based on the intermediate formation of benzynes. This report describes short sequences for the synthesis of various derivatives based on regioselective bromination, ortho-metalation, and halogen/metal permutations. 1,2-Dibromo-3-iodobenzene, 1,2-dibromo-4-iodobenzene, and 2,3-dibromo-1,4-diiodobenzene act as intermediates in these syntheses.

European Journal of Organic Chemistry published new progress about 1075719-78-6. 1075719-78-6 belongs to bromides-buliding-blocks, auxiliary class Bromide,Boronic acid and ester,Benzene,Boronate Esters,Boronic Acids,Boronic acid and ester, name is 2-(3,4-Dibromophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, and the molecular formula is C12H15BBr2O2, Quality Control of 1075719-78-6.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary