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.
这项发明涉及抑制11-beta HSD1。
Synthesis of α-Amino Ketones from Terminal Alkynes via Rhodium-Catalyzed Denitrogenative Hydration of <i>N</i>-Sulfonyl-1,2,3-triazoles
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.
2-Methylquinoline promoted oxidative ring-opening of N-sulfonyl aziridines with DMSO: facile synthesis of α-amino aryl ketones
作者:Xianhui Zhang、Shuai-Shuai Li、Liang Wang、Lubin Xu、Jian Xiao、Zhen-Jiang Liu
DOI:10.1016/j.tet.2016.10.041
日期:2016.12
2-Methylquinoline promoted room-temperature oxidative ring-opening of N-sulfonyl aziridines with DMSO has been developed, providing a mild and convenient method for the synthesis of a variety of different N-sulfonyl protected α-amino aryl ketones. The employment of 2-methylquinoline was crucial for the success of this mild transformation and good to excellent yields could be achieved.
Synthesis of 2-oxo-acetamidines via copper-catalyzed oxidative cross-coupling of α-amino ketone compounds with amines
作者:Pengjie Wang、Yi Xiong、Yiqun Qin、Jiajia Zhang、Niannian Yi、Jiannan Xiang、Wei Deng
DOI:10.1016/j.catcom.2019.105766
日期:2019.11
and efficient method for the synthesis of 2-oxo-acetamidines via copper-catalyzed oxidative cross-coupling of amines with α-amino ketone compounds was achieved. In this reaction, the C − N bond of α-amino ketone is broken and new C − N and CN bonds are constructed in one single transformation. This reaction system has a broad substrate scope and provides a facile pathway for the synthesis of 2-oxo-acetamidines