Syntheses of triazolo [6, 7??d] phthalide and triazolo [6, 7??d] dihydrocoumarin

…, FB Ji, WQ Fan, P Beretta, M Bertoldi

Index: Katritzky, Alan R.; Ji, Fu-Bao; Fan, Wei-Qiang; Beretta, Paolo; Bertoldi, M. Journal of Heterocyclic Chemistry, 1992 , vol. 29, # 6 p. 1519 - 1523

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Citation Number: 16

Abstract

Abstract Triazolo [6, 7-d] phthalide has been synthesized in a seven step sequence from phthalide in 24% overall yield, and triazolo [6, 7-d] dihydrocoumarin has been prepared in nine steps from dihydrocoumarin in 20% overall yield. The 1 H and 13 C nmr spectra and the tautomeric equilibria of the final compounds and intermediates are discussed.