Easy preparation of 1,4,5-trisubstituted 5-(2-alkoxy-1,2-dioxoethyl)-1,2,3-triazoles by chemoselective trapping of copper(I)–carbon bond with alkoxalyl chloride
摘要:
We found that alkoxalyl chloride (ClCOCO2R) did not carry out an acylation on 1-copper(I) alkyne in solvent without additives, but chemoselectively on 5-copper(I) 1,2,3-triazole (an intermediate in cycloaddition of 1-copper(I) alkyne and azide). Thus, a one-pot preparation of 1,4,5-trisubstituted 5-(2-alkoxy-1,2-dioxoethyl)-1,2,3-triazole was achieved by simply stirring the mixture of 1-copper(I) alkyne, azide, and alkoxalyl chloride at room temperature for 4 h. (C) 2013 Elsevier Ltd. All rights reserved.
Aralykyl (arylethynyl) aralkyl amines for use as vasodilators and antihypertensives
申请人:McNeilab, Inc.
公开号:EP0146271A2
公开(公告)日:1985-06-26
Acetylenes of the formula (I):
wherein Y, m, R1, R2, q, Alk, R3, n and R4 are as defined herein and Ar1 and Ar2 are aromatic, including the salts and ammonium derivatives of formula (I), in treating angina, hypertension and cardiac arrhythmias. Pharmaceutical compositions, methods of use and synthesis and novel intermediates are also part of the invention.
Acetylenic phenoxypropanol derivatives and pharmaceutical compositions for the treatment of hypertension
申请人:McNeilab, Inc.
公开号:EP0171209A1
公开(公告)日:1986-02-12
Phenoxypropanol derivatives having a 2-acetylenic moiety on the phenyl group thereof of the following formula (I):
and their use as anti-hypertensives, e.g. in man. Also part of the invention are pharmaceutical compositions and intermediates used in the synthesis.