The Catalytic Mannich Reaction of 1,1-Difluoro-2-trialkyl(aryl)silyl-2-trimethyl-silyloxyethenes: Preparation of β-Amino Acid Derivatives
作者:Woo Jin Chung、Masaaki Omote、John T. Welch
DOI:10.1021/jo050953l
日期:2005.9.1
Catalytic Mannich reactions of 1,1-difluoro-2-trialkyl(aryl)silyl-2-trimethylsilyloxyethenes (3) with a variety of sulfonylimines were utilized for the preparation of α,α-difluoro-β-amino acidderivatives (7). The influence of the Lewis acid on the reaction was examined. Methods for the conversion of α,α-difluoroacylsilanes to α,α-difluorocarboxylic acids were also explored.
COMPOSITIONS AND PROCESSES OF PREPARING AND USING THE SAME
申请人:Colby David A.
公开号:US20140039182A1
公开(公告)日:2014-02-06
The present invention relates to compositions, for example, the DBU/Hexafluoroacetone hydrate salt, and processes of preparing and using the same for the modification of chemical compounds via the release of trifluoroacetate. The DBU/Hexafluoroacetone hydrate salt can perform trifluoromethylation reactions on chemical compounds, such as carbonyl group-containing compounds.
[EN] COMPOSITIONS AND PROCESSES OF PREPARING AND USING THE SAME<br/>[FR] COMPOSITIONS ET LEURS PROCÉDÉS DE PRÉPARATION ET D'UTILISATION
申请人:PURDUE RESEARCH FOUNDATION
公开号:WO2012129384A2
公开(公告)日:2012-09-27
The present invention relates to compositions, for example, the DBU/Hexafluoroacetone hydrate salt, and processes of preparing and using the same for the modification of chemical compounds via the release of trifluoroacetate. The DBU/Hexafluoroacetone hydrate salt can perform trifluoromethylation reactions on chemical compounds, such as carbonyl group-containing compounds.