dyotropic rearrangement of α‐methylene‐β‐lactones has been realized, which enables the efficient access of a wide range of α‐methylene‐γ‐butyrolactones displaying remarkable structural diversity. Several appealing features of the reaction, including excellent efficiency, high stereospecificity, predictable chemoselectivity and broad substrate scope, render it a powerful tool for the synthesis of MBL‐containing
The Preparation and Utilization of 2-Ethylallyl Alcohol Dianions in<i>α</i>-Alkylidene Lactone Synthesis
作者:Tian Liu、Robert M. Carlson
DOI:10.1080/00397919308011233
日期:1993.5
The dianion of 2-ethylallyl alcohol adds to ketones and aldehydes to provide, after oxidation of the isolated diol, a mixture of beta-methyl-alpha-methylene- and (E)-alpha-ethylidene-gamma-lactones.