Substituted. gamma.-butyrolactones. Part 31. 2, 4 (3H, 5H)-Furandione: heteroannulations with aromatic o-amino carbonyl compounds and condensations with some …

DG Schmidt, PD Seemuth…

Index: Grob Schmidt, Diane; Seemuth, Paul D.; Zimmer, Hans Journal of Organic Chemistry, 1983 , vol. 48, # 11 p. 1914 - 1916

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Citation Number: 18

Abstract

Carbonyl Compounds. Earlier workers3 reported that a condensation of 1 with 2- aminobenzophenone gave 0-(2-benzoylphenylimino)-y-butyrolactone (2, eq 1). Cy-an R: Ph 2-bl R-CH, clization of 2 afforded type 3 compounds. The conversion that we report here seems, however, more convenient since it eliminates the preparation and isolation of the intermediate anil. Further, we have demonstrated that the condensation affords 3 with a ...