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Communication | Regular issue | Vol 26, No. 2, 1987, pp.329-331
Published online, 1st January, 1970
DOI: 10.3987/R-1987-02-0329
Thermolysis of Phenoxyacetyl-cyanomethylenetriphenylphosphoranes — Tandem Intramolecular Witting and Claisen Rearrangement Reactions

Rambabu Yadla and Jampani Madhusudana Rao

*Regional Research Laboratory, Hyderabad 500 007, India


Thermolysis of acyl-cyanomethylenetriphenylphosphorane containing aryloxyacetyl moiety in the acyl group results in tandem intramolecular Wittig and Claisen rearrangement reaction. The orthoallenylphenol intermediates formed cyclise to give a 2H-chromene or a benzofuran depending on substituents.