Tetrahedron letters

Ethynyl ortho esters as precursors of propargyl cations: The low-temperature, ionic diels-alder addition of ethyl propiolate to 1, 3-dienes via ethynyl ortho esters

PG Gassman, SP Chavan

Index: Gassman, Paul G.; Chavan, Subhash P. Tetrahedron Letters, 1988 , vol. 29, # 28 p. 3407 - 3410

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Citation Number: 29

Abstract

Abstract 3, 3, 3-Triethoxypropyne (triethyl orthopropiolate) was added to a series of 1, 3- dienes at low temperature in the presence of trimethylsilyl inflate to yield the 4π+ 2π products of the formal addition of ethyl propiolate to the 1, 3-dienes.