S. Xu, B. Yerxa, R. Sullivan
Feb 25, 1991
Citations
0
Influential Citations
8
Citations
Journal
Tetrahedron Letters
Abstract
Abstract The synthesis of 3-ethenyl-4-methoxycyclobutene-1,2-dione from dimethyl-squarate is described. This compound was observed to undergo facile 1,6-addition of both carbon and non-carbon nucleophiles to the 3-alkenyl group. Thus, it serves as a versatile starting material for the synthesis of a variety of substituted cyclobutenediones which are convenient starting materials to a variety of other ring systems.