Conformations of six-membered ring phosphorus heterocycles. I. Ring conformations and phosphorus configurations of isomeric six-membered ring phosphites

WG Bentrude, JH Hargis

Index: Bentrude,W.G.; Hargis,J.H. Journal of the American Chemical Society, 1970 , vol. 92, # 24 p. 7136 - 7144

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Citation Number: 68

Abstract

Abstract: A six-membered ring phosphorochloridite (5-tert-butyl-2-chloro-l, 3, 2- dioxaphosphorinane) and a geometrically isomeric pair of six-membered ring phosphites (cis-and trans-5-tert-butyl-2-methoxy-1, 3, 2-dioxaphos-phorinane) have been synthesized, and their conformational and configurational properties have been investigated. The cis- phosphite is shown to be the more stable isomer by about 1.4 kcal/mol at 25'and by nmr ...