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Title: Competitive [3,3] sigmatropic rearrangement of aryl propargyl ether moiety vs propargyl vinyl amine part in 6-[N-(4-aryloxybut-2-ynyl) N-methyl amino]coumarins
Authors: Majumdar, K C
Das, T K
Chattopadhyay, B
Keywords: 6-Aminocoumarin;Claisen rearrangement;Benzopyran;1,4-dichlorobut-2-yne;Sigmatropic rearrangement
Issue Date: Aug-2007
Publisher: CSIR
Abstract: Thermal rearrangement of 6-[N-(4/-aryloxybut-2-ynyl)N-methylamino]coumarins in refluxing N,N-DEA has led to Claisen rearrangement at the aryloxypropargyl segment resulting in the formation of N-(4/-coumarinylmethyl),N-methylcoumarins in excellent yield.
Page(s): 1337-1342
ISSN: 0376-4699
Appears in Collections:IJC-B Vol.46B(08) [August 2007]

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