Tetrahedron letters

Pyrolysis of β, γ, β′-trioxo phosphorus ylides: Convenient synthesis of symmetrical and unsymmetrical diacylalkynes

…, A Janosi, SV Raut, S Seth, IJ Shannon, FC Smith

Index: Aitken; Herion; Janosi; Raut; Seth; Shannon; Smith Tetrahedron Letters, 1993 , vol. 34, # 35 p. 5621 - 5622

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Citation Number: 16

Abstract

Abstract Flash vacuum pyrolysis of a series of 1, 2, 4-trioxo-3-triphenylphosphoranylidene- butane derivatives, formed by acylation of β-oxo-phosphorus ylides with α-oxo-acid chlorides, results in extrusion of Ph 3 PO exclusively across the 2, 3-position to give diacylalkynes.