A. Degirolamo et al., A STRAIGHTFORWARD APPROACH TO UNSATURATED CARBOXYLIC-ACID DERIVATIVESSTARTING FROM BIS-SILYLATED PRECURSORS, Tetrahedron, 54(40), 1998, pp. 12399-12408
A new synthetic approach to substituted unsaturated carboxylic acid de
rivatives, such as amides, nitriles and esters, has been developed, st
arting from easily accessible bis-silylated precursors. The key step w
as based upon the reaction of a bis-silylated diene and a bis-silylate
d enyne with chlorosulphonyl isocyanate, which afforded mono-silylated
amides, easily converted into substituted nitriles and esters. (C) 19
98 Published by Elsevier Science Ltd. All rights reserved.