Addition to unsaturated carbonyl compounds. Part II. The addition of hydrogen halides to substituted 2,3-acetylenic acids
Abstract
The kinetics, products, and stereochemistry of the polar addition of hydrogen chloride, bromide, and iodide to a series of substituted propiolic and phenylpropiolic acids have been studied. An analysis of the structure–reactivity and structure–stereochemistry relations is related to a major stereospecific process for trans-addition and a minor, cis-addition process.