Tetramethyl 2,2,4,4-tetramethoxycarbonylcyclobutane-1,3-dimalonate
Abstract
The structure of the trans-1,3-dimalonate, named in the title, obtained in the self-condensation of methyl sodio-1,3-dicarboxyglutaconate with iodine, and of its cis-isomer have been established by n.m.r. spectroscopy.