273405-42-8Relevant articles and documents
Heteroaryl-N-difluoromethyltrimethylsilanes - Versatile sources of heteroaryl-N-difluoromethyl anions in reactions with carbonyl compounds
Bissky,Staninets,Kolomeitsev,R?schenthaler
, p. 374 - 378 (2001)
An efficient procedure for synthesizing heteroaryl-N-difluoromethyltrimethylsilanes - new nucleophilic difluoromethylene synthons - from easily available N-bromodifluoromethylated heterocycles, chlorotrimethylsilane and aluminium powder in triglyme or N-methylpyrrolidinone on a preparative scale in 71-75% isolated yield is described. Heteroaryl-N-difluoromethyltrimethylsilanes and benzaldehyde react under fluoride ion catalysis to give 1-(1,1-difluor-2-hydroxy-2-phenyl-ethyl)heteroaryls, whereas for anionic heteroaryl-N-difluoromethylation of cyclohexanone a stoichiometrical mixture of heteroaryl-N-difluoromethyltrimethylsilanes and tetramethylammonium fluoride has to be used.
2-Alkyl-1-(2-aryl-1,1-difluoro-2-hydroxyethyl)benzimidazoles: Potential angiotensin II receptor antagonists
Yagupolskii, Lev M.,Fedyuk, Dmitrij V.
, p. 2265 - 2267 (2000)
2-Alkyl-1-(bromodifluoromethyl)benzimidazoles were synthesized and condensed with aromatic aldehydes to give 2-alkyl-1-(2-aryl-1,1-difluoro-2- hydroxyethyl)-benzimidazoles. A potential nonpeptide antagonist of the angiotensin II receptor with the -CF2CH(OH)-bridge between the heterocyclic nitrogen atom and the biphenyl moiety was synthesized. (C) 2000 Elsevier Science Ltd.
N-Trihalomethyl derivatives of benzimidazole, benzotriazole and indazole
Yagupolskii, Lev M.,Fedyuk, Dmitrij V.,Petko, Kirill I.,Troitskaya, Valeriya I.,Rudyk, Valentina I.,Rudyuk, Vitalij V.
, p. 181 - 187 (2007/10/03)
1-Chlorodifluoromethyl- and 1-trifluoromethyl-substituted 2-methylbenzimidazoles and benzotriazoles were obtained by chlorination of the corresponding methyl 1-azoledithiocarboxylates and subsequent fluorination of the resulting 1-trichloromethyl derivatives. The condensation of N-sodium salts of 2-alkylbenzimidazoles and indazole with CF2Br2 was shown to afford the corresponding 1-bromodifluoromethylated compounds.