DIRECT TRIFLUOROMETHYLATIONS USING TRIFLUOROMETHANE
申请人:Prakash G.K. Surya
公开号:US20140066640A1
公开(公告)日:2014-03-06
A direct trifluoromethylation method preferably using a trifluoromethane as a fluoro-methylating species. In particular, the present method is used for preparing a trifluoromethylated substrate by reacting a fluoromethylatable substrate with a trifiuoromethylating agent in the presence of an alkoxide or metal salt of silazane under conditions sufficient to trifluoromethylate the substrate; wherein the fluoromethylatable substrate includes chlorosilanes, carbonyl compounds such as esters, aryl halides, aldehydes, ketones, chalcones, alkyl formates, alkyl halides, aryl halides, alkyl borates, carbon dioxide or sulfur.
A micro‐flow nucleophilic trifluoromethylation of carbonyl compounds using gaseous fluoroform was developed. This method also allows the first micro‐flow transformation of N‐sulfinylimines into trifluoromethyl amines with excellent diastereoselectivity. To demonstrate the synthetic utility of this micro‐flow synthesis, the formal micro‐flow synthesis of Efavirenz is described.
Transfer Vinylation and Dienylation via Rhodium(I)-Catalyzed Deketonation of Allylic Alcohols
作者:Zheng-Qiang Liu、Cheng Liang、Zhen Luo、Yu-Fei Wu、Chuan-Ming Hong、Qing-Hua Li、Tang-Lin Liu
DOI:10.1021/acscatal.2c02325
日期:2022.6.17
bond cleavages of simple allylicalcohols have witnessed tremendous progress in recent years. However, an efficient method for cleaving the C–C bond via β-carbon elimination is still comparatively underexploited. In this study, we demonstrate rhodium(I)-catalyzed deketonative transfer vinylation and transfer dienylation of various tertiary allylicalcohols with ketones via β-vinyl and β-dienyl elimination
[EN] DIRECT TRIFLUOROMETHYLATIONS USING TRIFLUOROMETHANE<br/>[FR] TRIFLUOROMÉTHYLATIONS DIRECTES À L'AIDE DE TRIFLUOROMÉTHANE
申请人:UNIV SOUTHERN CALIFORNIA
公开号:WO2012148772A1
公开(公告)日:2012-11-01
A direct trifluoromethylation method preferably using a trifluoromethane as a fluoromethylating species. In particular, the present method is used for preparing a trifluoromethylated substrate by reacting a fluoromethylatable substrate with a trifluoromethylating agent in the presence of an alkoxide or metal salt of silazane under conditions sufficient to trifluoromethylate the substrate; wherein the fluoromethylatable substrate includes chlorosilanes, carbonyl compounds such as esters, aryl halides, aldehydes, ketones, chalcones, alkyl formates, alkyl halides, aryl halides, alkyl borates, carbon dioxide or sulfur.