An efficient Cs2CO3‐promoted synthesis of α‐amino ketones using hydrazines, aldehydes, and α‐haloketones as starting materials through a cascade condensation/nucleophilic substitution/NNbondcleavage route is developed. The carbonyl group plays a key role in this novel NNbondcleavage process.
通过级联缩合/亲核取代/ NN键裂解途径,以肼,醛和α-卤代酮为起始原料,开发了一种高效的Cs 2 CO 3促进的α-氨基酮合成方法。羰基在这种新颖的NN键裂解过程中起关键作用。
11-Beta HSD1 inhibitors
申请人:Xiang Shaoyun Jason
公开号:US20060025445A1
公开(公告)日:2006-02-02
This invention relates to inhibiting 11-beta HSD1.
N-Sulfonyl-1,2,3-triazoles react with water in the presence of a rhodium catalyst to produce alpha-amino ketones in high yield. An intermediary alpha-imino rhodium(II) carbenoid undergoes insertion into the O-H bond of water. This transformation formally achieves 1,2-aminohydroxylation of terminal alkynes in a regioselective fashion when combined with the copper(I)-catalyzed 1,3-dipolar cycloaddition with N-sulfonyl azides.