Opening of oxirane rings by the conjugate base of pentacarbonyl(methoxymethylcarbene)chromium in the presence of boron trifluoride etherate: a general and improved synthesis of pentacarbonyl(2-oxacyclopentylidene)chromium compounds
作者:Luciano. Lattuada、Emanuela. Licandro、Stefano. Maiorana、Henriette. Molinari、Antonio. Papagni
DOI:10.1021/om00049a050
日期:1991.3.27
A modified procedure for the synthesis of new pentacarbonyl(2-oxacyclopentylidene)chromium compounds is reported. Its application to optically pure epoxides allowed us to obtain the corresponding optically pure cyclic chromium carbene complexes. The oxidation of the (2-oxacyclopentylidene)pentacarbonyl-chromium compounds led to the corresponding substituted gamma-butyrolactones.