Synthesis 2006(19): 3243-3249  
DOI: 10.1055/s-2006-950230
PAPER
© Georg Thieme Verlag Stuttgart · New York

Vinylphosphonium Salt Mediated Reaction between Alkyl Propiolates and Aminophenols or Hydroxyphenols

Issa Yavari*, Sanaz Souri, Mehdi Sirouspour, Hoorieh Djahaniani
Chemistry Department, Tarbiat Modarres University, P. O. Box 14115-175, Tehran, Iran
Fax: +98(21)88006544; e-Mail: yavarisa@modares.ac.ir;
Further Information

Publication History

Received 10 April 2006
Publication Date:
05 September 2006 (online)

Abstract

Addition of catechol to methyl propiolate or ethyl phen­ylpropiolate in the presence of Ph3P leads to methyl 2-(1,3-benzodioxol-2-yl)acetate or 3-(1-phenylmethylidene)-1,4-benzodioxin-2-one. 2-Aminophenols react with alkyl propiolates in the presence of Ph3P to produce a nearly 1:1 mixture of 3-methyl-2H-1,4-benz­oxazin-2-one derivatives and methyl (E)-3-(2-aminophenoxy)-2-propenoates.