Characterization of the dimethyl-1,2-dimethylenecylclobutanes from the methylallene thermal dimerization
作者:Joseph J. Gajewski、Chung Nan Shih
DOI:10.1021/jo00966a018
日期:1972.1
Comportement d'esters α-ethyleniques vis a vis du systeme Me3SiCl/magnesium/HMPT
作者:J.-P. Picard、J. Dunogues、R. Calas
DOI:10.1016/s0022-328x(00)81315-7
日期:1974.9
Higginbotham; Lapworth, Journal of the Chemical Society, 1923, vol. 123, p. 1623
作者:Higginbotham、Lapworth
DOI:——
日期:——
Vogel, Journal of the Chemical Society, 1927, p. 1992
作者:Vogel
DOI:——
日期:——
Reductive Dimerization of Alkylidenemalonates Using Samarium(II) Diiodide and 1H-NMR Behavior of the Dimers, 2,3-Diaryl-1,1,4,4-butaneteracarboxylates.
Alkylidenemalonates were readily dimerized in the presence of SmI2 to give 2,3-disubstituted 1,1,4,4-butanetetracarboxylates as mixtures of meso and racemic isomers in moderate to good yields. The structure of the less polar isomer of tetraethyl 2,3-diphenyl-1,1,4,4-butanetetracarboxylate was determined by X-ray crystallographic analysis to be the meso form. Characteristic 1H-NMR behavior of the meso