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First isolation and characterization of 1, 2-oxaphosphetanes with three phenyl groups at the phosphorus atom in typical Wittig reaction using …

M Hamaguchi, Y Iyama, E Mochizuki, T Oshima

Index: Hamaguchi, Masashi; Iyama, Yuji; Mochizuki, Eiko; Oshima, Takumi Tetrahedron Letters, 2005 , vol. 46, # 51 p. 8949 - 8952

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Citation Number: 8

Abstract

1, 2-Oxaphosphetanes bearing three phenyl groups directly bound to the phosphorus atom were successfully isolated for the first time as stable crystals in the typical Wittig reaction of cyclopropylidenetriphenylphosphorane with activated carbonyl compounds. X-ray analysis of the oxaphosphetane showed that the phosphorus atom is at the center of a slightly distorted trigonal bipyramidal structure. Thermal decomposition of these ...