The Journal of Organic Chemistry

Reactions of phosphorus compounds. XXVI. Preparation and reactions of 3-and 4-substituted 5-benzoyl-2, 2, 2, 5-tetraphenyl-2-oxaphospholanes

EE Schweizer, WS Creasy

Index: Schweizer,E.E.; Creasy,W.S. Journal of Organic Chemistry, 1971 , vol. 36, p. 2244 - 2249

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Citation Number: 6

Abstract

18 proton nmr are significantly different. That of 7b appears at 0.6 ppm, considerably shielded with respect to the absorption observed in 7a (1.1 ppm). Compound 7b undergoes a deuterium for proton exchange at C3 when a sample in CDCla is shaken with DzO (requiring 48 hr), a reaction similarly reported for 5.2 The remaining methine proton, on C,, then appears as a doublet of quartets at 6 3.4 ppm with a vicinal PH coupling constant of ...