Heck cross-coupling reaction of 3-iodoindazoles with methyl acrylate: a mild and flexible strategy to design 2-aza tryptamines
摘要:
In order to design 2-azabioisosteres of tryptamine, serotonin or melatonin, the conditions of the Heck coupling reaction of 3-iodoindazoles with methyl acrylate are studied. This reaction authorizes the synthesis of 3-indazolylpropenoates as key intermediates to prepare 3-indazolylpropionic acids and 3-indazolylethyl-amines. The flexible synthetic strategy allows molecular diversity. (C) 2000 Elsevier Science Ltd. All rights reserved.
Heck cross-coupling reaction of 3-iodoindazoles with methyl acrylate: a mild and flexible strategy to design 2-aza tryptamines
摘要:
In order to design 2-azabioisosteres of tryptamine, serotonin or melatonin, the conditions of the Heck coupling reaction of 3-iodoindazoles with methyl acrylate are studied. This reaction authorizes the synthesis of 3-indazolylpropenoates as key intermediates to prepare 3-indazolylpropionic acids and 3-indazolylethyl-amines. The flexible synthetic strategy allows molecular diversity. (C) 2000 Elsevier Science Ltd. All rights reserved.
This paper describes a Sonogashira-type cross-coupling reaction of 3-iodoindazoles various terminal alkynes as a general route to 3-alkynylindazoles. The Coupling reaction is illustrated by the preparation of ne indazolylpropiolic or propargylic derivatives. Scope and limitation of the method are outlined. (C) 2002 Elsevier Science Ltd. All rights reserved.