Direct access to 1,2,3-triazoles through organocatalytic 1,3-dipolar cycloaddition reaction of allyl ketones with azides
作者:Wenjun Li、Zhiyun Du、Jiayao Huang、Qianfa Jia、Kun Zhang、Jian Wang
DOI:10.1039/c4gc00406j
日期:——
A general organocatalytic 1,3-dipolarcycloadditionreaction between allyl ketones and various azides is reported. The reaction is catalyzed by a secondary amine to generate substituted 1,2,3-triazoles with high levels of regioselectivity.
A NHC-catalyzed 1,3-dipolar cycloaddition reaction of allyl ketones with azides: direct access to 1,4,5-trisubstituted 1,2,3-triazoles
作者:Huijun Yuan、Lili Zhang、Zhantao Liu、Yang Liu、Jian Wang、Wenjun Li
DOI:10.1039/c7ob00906b
日期:——
A NHC-catalyzed 1,3-dipolar cycloadditionreaction of allyl ketones with azides has been developed. This strategy could generate 1,4,5-trisubstituted 1,2,3-triazoles in high yields and regioselectivities in the presence of a 20 mol% N-heterocyclic carbene catalyst. A broad substrate scope of this process is also presented.
[EN] METHOD AND SUBSTANCES FOR PREPARATION OF N-SUBSTITUTED PYRIDINIUM COMPOUNDS<br/>[FR] PROCÉDÉ ET SUBSTANCES PERMETTANT DE PRÉPARER DES COMPOSÉS DE PYRIDINIUM N-SUBSTITUÉS
申请人:ROCHE DIAGNOSTICS GMBH
公开号:WO2012101095A1
公开(公告)日:2012-08-02
The present invention relates to a method for the synthesis of N-substituted 3- acylated pyridinium compounds by reacting a pentamethine precursor with a primary amine.