Gerald Lange, M. Savard, T. Viswanatha
1985
Citations
0
Influential Citations
22
Citations
Journal
Tetrahedron Letters
Abstract
3-Carboalkoxy-2,3-dihydrothiophenes, available by Birch reduction of thiophene-3-carboxylic acid or more efficiently by deconjugation of 2,5-dihydrothiophene-3-carboxylic acid by reaction with ethyl chloroformate and triethylamine, undergo cycloaddition reactions with dichloroketene leading to 4-carboxy-7,7-dichloro-2-thiabicyclo[3.2.0]heptan-6-ones which are of interest as potential β-lactamase inhibitors.