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Title: Facile synthesis of various 4-carboxylic acid derivatives and their amide analogues of benzopyrans
Authors: Tripathi, Anil K
Mukherjee, Debaraj
Koul, S
Taneja, Subhash C
Keywords: Benzopyran;Chromakalim;Selenium Dioxide;Carboxylalkyl Amide
Issue Date: Apr-2012
Publisher: NISCAIR-CSIR, India
Abstract: A series of 4-carboxyalkyl amide derivatives of benzopyrans 6a-d and 7a-d have been prepared in 40-64% overall yields. In the proposed synthetic strategy, the key intermediate 4-methyl substituted chroman 3 is obtained by condensing substituted phenol and mesityl oxide in presence of PPA. The required carboxylic acid function has been introduced at C-4 in benzopyran ring through a novel route.
Page(s): 605-610
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.51B(04) [April 2012]

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