1995•Phosphorus, sulfur, and silicon and the related elementsRequires access

STUDIES ON THE WITTIG REACTION (XXII): A CONVENIENT SYNTHESIS OF ω-AZOLYLALKYLTRIPHENYL PHOSPHONIUM SALTS AND THEIR STEREOSELECTIVITY IN THE WITTIG REACTION

Ming Wu Ding, De Qing Shi, Wen Xiao, Wen Fang Huang, Tian Jie Wu

Abstract

ω-Azolylalkyltriphenylphosphonium bromides (5) were readily prepared from corresponding ω-bromo phosphonium salts (4) and azoles. The Wittig reactions of (5) with aromatic aldehydes were studied and 26 ω-azolyl alkenes were obtained. The reaction showed E-stereoselectivity.

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Key concepts: Wittig reaction, Phosphonium, Stereoselectivity, Chemistry, Organic chemistry, Phosphonium salt, Ylide, Medicinal chemistry