Montmorillonite clay catalysis. Part 14.1 A facile synthesis of 2-substituted and 2, 2-disubstituted 1, 3-benzodioxoles

TS Li, LJ Li, B Lu, F Yang

Index: Li, Tong-Shuang; Li, Li-Jun; Lu, Bo; Yang, Feng Journal of the Chemical Society - Perkin Transactions 1, 1998 , # 21 p. 3561 - 3564

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Citation Number: 14

Abstract

A series of 2-substituted and 2, 2-disubstituted 1, 3-benzodioxoles have been synthesised by reaction of catechol and pyrogallol with corresponding aldehydes and ketones catalysed by montmorillonite KSF or K-10. The reactions are completed within 2.7–24 h to give satisfactory yields. Ketones give better yields than aldehydes, although highly sterically hindered ketones and diaryl ketones fail to react at all.