A convenient general synthesis of 3-substituted 2 H-chromene derivatives

PT Kaye, XW Nocanda

Index: Kaye, Perry T.; Nocanda, Xolani W. Journal of the Chemical Society. Perkin Transactions 1, 2002 , # 10 p. 1318 - 1323

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Citation Number: 69

Abstract

Reactions of 2-hydroxybenzaldehydes and 2-hydroxy-1-naphthaldehydes with various activated alkenes under Baylis–Hillman conditions have been shown to proceed with regioselective cyclisation to afford the corresponding 3-substituted chromene derivatives. In some cases competitive dimerisation of the alkene component was observed, and direct dimerisation in the absence of the aldehyde has been explored.