AN IMPROVED SYNTHESIS OF NAPHTHO [2, 3-d]-1, 3-DIOXOLE-5-METHOXY-6-CARBOXYLIC ACID

J Zjawiony, JR Peterson

Index: Zjawiony, Jordan; Peterson, John R. Organic Preparations and Procedures International, 1991 , vol. 23, # 2 p. 163 - 172

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Citation Number: 4

Abstract

synthesis of taiwanin C was demonstrated by Meyers and Avila. 1 We found need for large quantities of 1 in a synthesis of an extended-aromatic epipodophyllotoxin analog2 The only prior synthesis of 1 yielded it as a minor product from the metalatiodcarbonylation of 5- methoxynaphtho [2, 3-d]-l, 3-dioxole (2J. 1 Compound 2. was prepared in 10% overall yield from piperonal. 3 OMe H02C OMe tdl. 0 0 0 2. H30' RLi, C02*< &co:"{a 2 l (lO%)(65%)

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