alpha,beta-unsaturated carboxylic ester
alpha,beta-unsaturated carboxylic ester
A carboxylic ester of general formula R<small><sup>1</small></sup>R<small><sup>2</small></sup>C=CR<small><sup>3</small></sup>‒C(=O)OR<small><sup>4</small></sup> (R<small><sup>4</small></sup> ≠ H) or R<small><sup>1</small></sup>C≡C‒C(=O)OR<small><sup>2</small></sup> (R<small><sup>2</small></sup> ≠ H) in which the ester C=O function is conjugated to an unsaturated C-C bond at the α,β position.