The use of acyl anion equivalents in the formation of CC bonds is a powerful strategy in the development of new synthetic methods. 2 Among all the acyl anion equivalents, the R- alkoxy vinyl anions are notable for their low cost, high reactivity, and easy deprotection of the resultant vinyl ether functionality. R-Alkoxyvinyllithiums can be prepared by metalation of the commercially available methyl vinyl ether or ethyl vinyl ether using t-BuLi or super base ( ...