Category: bromides-buliding-blocks

Zeynizadeh, Behzad; Mousavi, Hossein; Mohammad Aminzadeh, Farkhondeh published the artcile< A hassle-free and cost-effective transfer hydrogenation strategy for the chemoselective reduction of arylnitriles to primary amines through in situ-generated nickel (II) dihydride intermediate in water>, Synthetic Route of 3959-07-7, the main research area is benzonitrile reduction chemoseslective green chem; benzyl amine preparation.

A new, simple, efficient, inexpensive, and chemoselective transfer hydrogenation strategy was introduced for the straightforward reduction of arylnitriles to corresponding primary amines using sodium borohydride (NaBH4) and nickel acetate tetrahydrate (Ni(OAc)2•4H2O) through in situ-generated nickel (II) dihydride intermediate in the water medium at 50°. The presented methodol. featured moderate reaction conditions, nickel boride (Ni2B)-free trajectory, good-to-excellent yields of the products, relatively short reaction times, satisfactory chemoselectivity, and did not involve the use of toxic organic solvent and also any base or ligand.

Journal of Molecular Structure published new progress about Aromatic amides Role: SPN (Synthetic Preparation), PREP (Preparation). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Synthetic Route of 3959-07-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Justoni, R.; Pessina, R. published the artcile< Substances presumably with antitubercular action. I. Derivatives of 4-aminosalicylic acid acylated at the hydroxyl group>, COA of Formula: C7H4BrNO4, the main research area is .

Treating p-O2NC6H4Me with Br in the presence of Fe powder, washing with NaHSO3 solution, steam distillation, and crystallization from EtOH give 90% 2,4-Br(O2N)C6H3Me (I). Heat 5 kg. of I with 35 l. 65% HNO3 to the b.p. for 96 hrs., with 11.72% HNO3 added every 6 hrs., cool to -10°, sep. the acid liquid to treat another quantity of 5 kg. I, dilute the part in excess of 35 l., and distil to recover the unreacted I in the distillate and some of the Br(O2N)C6H3CO2H (II) in the residue; combine this residue with the bulk of II, dissolve in NH3, and precipitate with acid. The yield of II is 65%. II (2.46 kg.) in 4 l. H2O is mixed with 1 l. of 36° Bé. NaOH, heated 3 hrs. with 360 g. Cu(OAc)2 and 1.86 kg. Ba(OH)2.8H2O with further addition of 3 portions of 600 g. Ba(OH)2.8H2O, and the filtered paste of Ba p-nitrosalicylate treated with HCl to give the free acid (III). Acetylation gives 2,4-AcO(O2N)C6H3CO2H, m. 156°. Heating III with EtCOCl in PhMe gives 4,2-O2N(EtCO)C6H3CO2H, m. 153-4°. O-PrCO homolog, m. 134-5°; O-Me2CHCO homolog, m. 145-6°. The NO2 group is reduced at 20-5° with Pt black as a catalyst and the Me or Et ester of the acylated acid as solvent. 4,2-H2N(AcO)C6H3CO2H m. 136°. Further acetylation gives the N,O-di-Ac derivative, m. 189-90°. The O-EtCO acid m. 147°; O-PrCO acid m. 133°; O-Me2CHCO acid m. 150° (decomposition). Heating 2,4-HO(O2N)C6H3CO2Me with Ac2O gives 4,2-O2N(AcO)C6H3CO2Me, m. 79-80° (from petr. ether); iso-Pr ester, m. 44-5°. 4,2-O2N(AcO)C6H3CO2Me in 80% AcOH with Zn slowly forms 4,2-H2N(AcO)C6H3CO2Me, m. 109-10°; the O-EtCO homolog m. 111-12°. 4,2-H2N(AcO)C6H3CO2CHMe2 m. 141-2°; O-Me2CCO homolog m. 99-101°.

Farmaco (1946-1952) published new progress about Dyes. 16426-64-5 belongs to class bromides-buliding-blocks, and the molecular formula is C7H4BrNO4, COA of Formula: C7H4BrNO4.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Ghorbani-Choghamarani, Arash; Taherinia, Zahra published the artcile< Chiral cobalt-peptide metal-organic framework (Co-P-MOF) as an efficient and reusable heterogeneous catalyst for the asymmetric sulfoxidative cross-coupling reaction using poly sulfinylpiperazine>, Electric Literature of 401-78-5, the main research area is cobalt based peptide metal organic framework nanocatalyst preparation; chiral sulfoxide green preparation; aryl halide phenylboronic acid sulfoxidative Suzuki coupling cobalt nanocatalyst.

Chiral cobalt metal-organic framework based on peptide with aspartic acid as building block has been synthesized and characterized by FTIR, TGA, DSC, SEM, TEM, BET and X-ray diffraction anal. The catalytic activity of Co-P-MOFs was applied for synthesis of sulfoxides ArS(O)Ph [Ar = Ph, 2-MeC6H4, 4-ClC6H4, etc.] via asym. sulfoxidative cross-coupling using poly sulfinylpiperazine as a novel sulfoxide transfer reagent. The Co-P-MOF could be recycled several times without loss of activity.

Synthetic Metals published new progress about Aryl halides Role: RCT (Reactant), RACT (Reactant or Reagent). 401-78-5 belongs to class bromides-buliding-blocks, and the molecular formula is C7H4BrF3, Electric Literature of 401-78-5.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Huang, Shuai Shuai; Zheng, Zhan Jiang; Cui, Yu Ming; Xu, Zheng; Yang, Ke Fang; Xu, Li Wen published the artcile< Convenient Synthesis of 2-(2,2-Difluoroethoxy)-6-(trifluoromethyl)-benzenesulfonyl Chloride, A Key Building Block of Penoxsulam>, Formula: C7H4BrF3, the main research area is difluoroethoxy trifluoromethyl benzenesulfonyl chloride preparation key building block penoxsulam; bromobenzotrifluoride regioselective lithiation coupling chloroxidn copper catalyst.

A convenient and efficient three-step synthesis of 2-(2,2-difluoroethoxy)-6-(trifluoromethyl)benzenesulfonyl chloride, the key building block of penoxsulam, is described. The main features of the synthesis include a regioselective lithiation and subsequent electrophilic substitution starting from com. available 3-bromobenzotrifluoride to provide (2-bromo-6-(trifluoromethyl)phenyl)(propyl)sulfane, then a copper-catalyzed C-O coupling to introduce the difluoroethoxy moiety and chloroxidn. conditions to give the desired sulfonyl chloride.

Synthesis published new progress about Arenesulfonyl chlorides Role: SPN (Synthetic Preparation), PREP (Preparation). 401-78-5 belongs to class bromides-buliding-blocks, and the molecular formula is C7H4BrF3, Formula: C7H4BrF3.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Shen, Qiuyan; Xu, Tianyi; Zhuang, Gui-lin; Zhuang, Yuan; Sun, Liming; Han, Xiguang; Wang, Xiaojun; Zhan, Wenwen published the artcile< Spatially Separated Photoinduced Charge Carriers for the Enhanced Photocatalysis Over the One-Dimensional Yolk-Shell In2Se3@N-C Nanoreactor>, Name: 4-Bromobenzylamine, the main research area is photoinduced charge carrier indium selenide nitrogen doped carbon nanoreactor; yolk shell nanorod photocatalysis catalyst amine oxidation adsorption; cross dehydrgenative coupling isoquinoline indole.

Charge separation is crucial for applications of semiconductors in photocatalysis, especially in the field of photocatalytic organic transformation involving both the electrons and holes. Herein, the authors have spatially separated the photoinduced charge carriers on a nanoscale by engineering both the composition and morphol. of a semiconductor-based photocatalyst. A yolk-shell nanorod structure (In2Se3@N-C YSR), which is composed of interpenetrated In2Se3 nanosheets as the core and an N-doped C layer as the shell, was fabricated. This yolk-shell structure with confined cavities can provide a high surface area and multiple light reflections. The spatial distribution of the In2Se3 nanosheets and N-doped C layer can provide spatially separated redox-active sites, due to the existence of a controlled transfer pathway from In2Se3 to N-doped C layer for electrons, which can be revealed by photocurrent measurements, time-resolved photoluminescence spectra, and d. functional theory (DFT) calculations Therefore, from the above merits, the obtained In2Se3@N-C YSR has exhibited highly enhanced photocatalytic activity toward photocatalytic organic transformations, including the selective oxidation of amines to imines and the cross-dehydrogenative coupling reaction. DFT calculations also indicated that the effective adsorption of the substrate on In2Se3@N-C also has a good influence on the photocatalytic process of organic transformation.

ACS Catalysis published new progress about Adsorption. 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Name: 4-Bromobenzylamine.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Burde, Ameya S.; Chemler, Sherry R. published the artcile< Copper-Catalyzed Enantioselective Oxysulfenylation of Alkenols: Synthesis of Arylthiomethyl-Substituted Cyclic Ethers>, Safety of Methyl 2-bromo-4-methoxybenzoate, the main research area is alkenol disulfide copper catalyst regioselective enantioselective oxysulfenylation; phenylthiomethyl cyclic ether preparation.

A complementary approach via copper catalysis was presented. This exoselective method provides enantioenriched arylthiomethyl-substituted tetrahydrofurans, phthalans, isochromans, and morpholines from acyclic alkenols. This method provides the largest scope to date for the exocyclization mode, and with generally high enantioselectivity. The enantioselectivity of this copper-catalyzed oxysulfenylation is rationalized by a proposed mechanism involving alkene oxycupration followed by C-S bond formation via radical-mediated atom transfer.

ACS Catalysis published new progress about Alkenyl alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 17100-65-1 belongs to class bromides-buliding-blocks, and the molecular formula is C9H9BrO3, Safety of Methyl 2-bromo-4-methoxybenzoate.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Lu, Changhui; Li, Xiaohong; Chang, Shunqin; Zhang, Yuqi; Xing, Donghui; Wang, Shuo; Lin, Yueping; Jiang, Huanfeng; Huang, Liangbin published the artcile< Thioamide synthesis via copper-catalyzed C-H activation of 1,2,3-thiadiazoles enabled by slow release and capture of thioketenes>, Formula: C7H8BrN, the main research area is thiadiazole amine copper catalyst regioselective carbon hydrogen activation; thioamide preparation.

A Cu-catalyzed thioacylation of amines via a C-H activation/coordinated stabilization protocol to ensure the slow-release of thioketenes, which are captured by various amines to afford thioamides was developed. This method was characterized by its simplicity, efficiency and broad substrate scope in both 1,2,3-thiadiazoles and amines. Its versatility was further illustrated by the late-stage thioamidation of N-containing drugs, peptides, catalysts, and ligands. Mechanism studies demonstrate that the active Cu(I) species was formed via the reduction of Cu(II) during the induction period, and the rate-determining step was the C-H activation of 1,2,3-thiadiazole.

Organic Chemistry Frontiers published new progress about Amidation catalysts (thioamidation). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Formula: C7H8BrN.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Friis, Stig D.; Pirnot, Michael T.; Dupuis, Lauren N.; Buchwald, Stephen L. published the artcile< A Dual Palladium and Copper Hydride Catalyzed Approach for Alkyl-Aryl Cross-Coupling of Aryl Halides and Olefins>, Recommanded Product: (3-Bromophenyl)(trifluoromethyl)sulfane, the main research area is palladium copper hydride catalyzed cross coupling aryl halide olefin; alkenes; copper; cross-coupling; homogeneous catalysis; palladium.

We report an efficient means of sp2-sp3 cross coupling for a variety of terminal monosubstituted olefins with aryl electrophiles using Pd and CuH catalysis [e.g., 4-bromoanisole + 4-phenyl-1-butene → MeOC6H4-4-(CH2)4Ph in presence of [Pd(cinnamyl)Cl]2, BrettPhos, CuCl.(R)-DTBM-SEGPHOS and Me2PhSiH]. In addition to its applicability to a range of aryl bromide substrates, this process was also suitable for electron-deficient aryl chlorides, furnishing higher yields than the corresponding aryl bromides in these cases. The optimized protocol does not require the use of a glove-box and employs air-stable Cu and Pd complexes as precatalysts. A reaction on 10 mmol scale further highlighted the practical utility of this protocol. Employing a similar protocol, a series of cyclic alkenes were also examined Cyclopentene was shown to undergo efficient coupling under these conditions. Lastly, deuterium-labeling studies indicate that deuterium scrambling does not take place in this sp2-sp3 cross coupling, implying that β-hydride elimination is not a significant process in this transformation.

Angewandte Chemie, International Edition published new progress about Aryl bromides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 2252-45-1 belongs to class bromides-buliding-blocks, and the molecular formula is C7H4BrF3S, Recommanded Product: (3-Bromophenyl)(trifluoromethyl)sulfane.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Miyamoto, Shoto; Matsuoka, Aki; Yamada, Yuji; Ishikawa, Ryuta; Hayashida, Osamu published the artcile< Benzoxaborole Catalyst for Site-Selective Modification of Polyols>, Application In Synthesis of 6942-39-8, the main research area is benzoxaborole catalyst preparation; site selective protecting group free modification polyol; benzoylation tosylation benzylation glycosylation cis diol benzoxaborole catalyst.

The site-selective modification of polyols bearing several hydroxyl groups without the use of protecting groups remains a significant challenge in synthetic chem. To address this problem, novel benzoxaborole derivatives were designed as efficient catalysts for the highly site-selective and protecting-group-free modification of polyols. To identify the effective substituent groups enhancing the catalytic activity and selectivity, a series of benzoxaborole catalysts were synthesized. In-depth anal. for the substituent effect revealed that I [R = 4-F, 4-CF3, 3,5-(CF3)2], bearing multiple electron-withdrawing fluoro- and trifluoromethyl groups, exhibited the greatest catalytic activity and selectivity. Moreover, I [R = 4-F]-catalyzed benzoylation, tosylation, benzylation, and glycosylation of various cis-1,2-diol derivatives proceeded with good yield and site-selective manner.

European Journal of Organic Chemistry published new progress about Benzoxaboroles Role: CAT (Catalyst Use), SPN (Synthetic Preparation), USES (Uses), PREP (Preparation). 6942-39-8 belongs to class bromides-buliding-blocks, and the molecular formula is C8H6BrFO2, Application In Synthesis of 6942-39-8.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Murugesan, Natesan; Gu, Zhengxiang; Fadnis, Leena; Tellew, John E.; Baska, Rose Ann F.; Yang, Yifan; Beyer, Sophie M.; Monshizadegan, Hossain; Dickinson, Kenneth E.; Valentine, Maria T.; Humphreys, W. Griffith; Lan, Shih-Jung; Ewing, William R.; Carlson, Kenneth E.; Kowala, Mark C.; Zahler, Robert; Macor, John E. published the artcile< Dual Angiotensin II and Endothelin A Receptor Antagonists: Synthesis of 2'-Substituted N-3-Isoxazolyl Biphenylsulfonamides with Improved Potency and Pharmacokinetics>, Synthetic Route of 89003-95-2, the main research area is angiotensin endothelin antagonist isoxazolyl biphenylsulfonamide preparation pharmacokinetics; antihypertensive synergism angiotensin endothelin antagonist isoxazolyl biphenylsulfonamide preparation pharmacokinetics.

In a previous report its was demonstrated that merging together key structural elements present in an AT1 receptor antagonist (irbesartan) with key structural elements in a biphenylsulfonamide ETA receptor antagonist followed by addnl. optimization provided a product which is a dual-action receptor antagonist (DARA), which potently blocked both AT1 and ETA receptors. Described herein are our efforts directed toward improving both the pharmacokinetic profile as well as the AT1 and ETA receptor potency of 4′-[(2-butyl-4-oxo-1,3-diazaspiro[4.4]non-1-en-3-yl)methyl]-N-(3,4-dimethyl-5-isoxazolyl)-2′-[(3,3-dimethyl-2-oxo-1-pyrrolidinyl)methyl][1,1′-biphenyl]-2-sulfonamide (I). Efforts centered on modifying the 2′-side chain of I and examining the (isoxazolyl)sulfonamide moiety in I. This effort resulted in the discovery of 4′-[(2-butyl-4-oxo-1,3-diazaspiro[4.4]non-1-en-3-yl)methyl]-N-(4,5-dimethyl-3-isoxazolyl)-2′-(ethoxymethyl)[1,1′-biphenyl]-2-sulfonamide (II) as a highly potent second-generation DARA. This compound also showed substantially improved pharmacokinetic properties compared to I. In rats, DARA II reduced blood pressure elevations caused by i.v. infusion of Ang II or big ET-1 to a greater extent and with longer duration than DARA I or AT1 or ETA receptor antagonists alone. II clearly demonstrated superiority over irbesartan (an AT1 receptor antagonist) in the normal SHR model of hypertension in a dose-dependent manner, demonstrating the synergy of AT1 and ETA receptor blockade in a single mol. The crystal and mol. structures of II were reported.

Journal of Medicinal Chemistry published new progress about Angiotensin II receptor antagonists. 89003-95-2 belongs to class bromides-buliding-blocks, and the molecular formula is C8H4BrNO, Synthetic Route of 89003-95-2.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary