A practical and efficient method for the synthesis of .beta.-lactones
摘要:
This paper describes a convenient one-step preparation of beta-lactones based on the addition of thiol ester enolates to carbonyl compounds. Under the proper conditions the resulting aldolates undergo spontaneous cyclization to produce beta-lactones in good to excellent yield. The new beta-lactone synthesis provides access to 2-oxetanones with a variety of substituents and substitution patterns. In general, thiol ester enolates combine with carbonyl compounds to form the less sterically crowded beta-lactone diastereomers, and in some cases the reaction proceeds with excellent stereoselectivity. In conjunction with the stereospecific decarboxylation of beta-lactones, this chemistry also provides a very attractive approach to the synthesis of substituted alkenes.
A practical and efficient method for the synthesis of .beta.-lactones
作者:Rick L. Danheiser、James S. Nowick
DOI:10.1021/jo00003a047
日期:1991.2
This paper describes a convenient one-step preparation of beta-lactones based on the addition of thiol ester enolates to carbonyl compounds. Under the proper conditions the resulting aldolates undergo spontaneous cyclization to produce beta-lactones in good to excellent yield. The new beta-lactone synthesis provides access to 2-oxetanones with a variety of substituents and substitution patterns. In general, thiol ester enolates combine with carbonyl compounds to form the less sterically crowded beta-lactone diastereomers, and in some cases the reaction proceeds with excellent stereoselectivity. In conjunction with the stereospecific decarboxylation of beta-lactones, this chemistry also provides a very attractive approach to the synthesis of substituted alkenes.
DANHEISER, RICK L.;NOWICK, JAMES S., J. ORG. CHEM., 56,(1991) N, C. 1176-1185
作者:DANHEISER, RICK L.、NOWICK, JAMES S.
DOI:——
日期:——
SYNTHESIS OF b-LACTONES AND ALKENES VIA THIOL ESTERS: (E)-2,3-DIMETHYL-3-DODECENE
作者:Danheiser, Rick L.、Nowick, James S.、Lee, Janette H.、Miller, Raymond F.、Huboux, Alexandre H.、Mathre, David J.、Shinkai, Ichiro