68005-30-1

Basic information

• Product Name: 2-broMobenzoxazole
• Synonyms: 2-broMobenzoxazole
• CAS NO: 68005-30-1
• Molecular Formula: C₇H₄BrNO
• Molecular Weight: 198.01676
• Mol File: 68005-30-1.mol

Chemical Properties

• Boiling Point: 263.8±23.0 °C(Predicted)
• Appearance: /
• Density: 1.710±0.06 g/cm3(Predicted)
• PKA: 0.62±0.10(Predicted)
• CAS DataBase Reference: 2-broMobenzoxazole(CAS DataBase Reference)
• NIST Chemistry Reference: 2-broMobenzoxazole(68005-30-1)
• EPA Substance Registry System: 2-broMobenzoxazole(68005-30-1)

Safety Data

• Hazardous Substances Data: 68005-30-1(Hazardous Substances Data)

Upstream product

• 273-53-0 benzoxazole 
• 2382-96-9 benzo[d]oxazole-2-(3H)-thione 

Downstream Products

• 2008-04-0 2-(trifluoromethyl)benzo[d]oxazole 
• 109243-80-3 benzo[d]oxazol-2-yl(phenyl)methanol 
• 1190280-72-8 C₁₈H₁₂F₃N₃O 
• 833-50-1 2-phenylbenzo[d]oxazole 
• 20934-81-0 4-(benzo[d]oxazol-2-yl)aniline 

Relevant articles and documents

T -BuONa-mediated direct C-H halogenation of electron-deficient (hetero)arenes

An efficient halogenation of electron-deficient (hetero)arenes is described. The reaction utilizes common t-BuONa as a catalyst (for iodination) or a promoter (for bromination and chlorination), and perfluorobutyl iodide, CBr4 or CCl4 as the readily-available halogenating agents, respectively. The protocol features broad scope, high efficiency, mild conditions and gram scalability. An ionic pathway involving halogen bond formation and halophilic attack is proposed. The utility of the resulting iodinated heteroarenes is demonstrated in visible light-mediated Caryl-Caryl cross-coupling reaction.

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The invention relates to a method for preparing halogenated (hetero) aromatic hydrocarbons. The halogenated (hetero) aromatic hydrocarbons are prepared from cheap and easily available perfluorobutyl iodide, carbon tetrabromide and carbon tetrachloride as iodinated, brominated and chlorinated reagents respectively under the action of alkali catalysis (promotion). The method comprises the following steps: firstly, (hetero) aromatic hydrocarbons, a halogenated reagent and an inorganic base are placed in an organic solvent, stirred at room temperature and monitored with TLC until a substrate disappears, and the reaction is stopped; then, a reaction mixed solution is poured into water and extracted, an organic phase is dried, and the organic solvent is removed under reduced pressure; finally, silica-gel column chromatography is performed on a crude product, and a product is obtained. Purification can also be performed by recrystallization. The method has the advantages that the synthetic route is wide in substrate range, raw materials and reagents are cheap and easily available, operation is simple, conditions are mild, yield is high, energy consumption is reduced, the reaction route is safe, gram-grade preparation can be performed and the like.

AMINOISOXAZOLINE COMPOUNDS AS AGONISTS OF ALPHA7-NICOTINIC ACETYLCHOLINE RECEPTORS

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Gold-catalyzed C-heteroatom (C-X) coupling reactions are evaluated without using sacrificial oxidants. Vital to the success of this methodology is the nucleophile-assisted activation of aryldiazonium salts, which could be an effective oxidant for converting Au(i) to Au(iii) even without the addition of an assisting ligand or photocatalyst. By accelerating the reaction kinetics to outcompete C-C homo-coupling or diazonium dediazoniation, gold-catalyzed Sandmeyer reactions were achieved with different nucleophiles, forming C-Br, C-S and C-P bonds in high yields and selectivities.

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