Crystal structure and nuclear magnetic resonance and infrared spectra of 9,9-dideuteriothioxanthenium bis(carboethoxy)methylide, dimethyl 9-(1,4-dimethylthioxanthenyl)malonate, thioxanthonium bis(carbomethoxy)methylide, and related compounds
作者:M. A. Abbady、D. Craig、A. L. Ternay、G. E. Martin、J. Galloy、W. H. Watson
DOI:10.1021/jo00322a008
日期:1981.4
TAMURA YASUMITSU; MUKAI CHISATO; NAKAJIMA NORIKO; IKEDA MASAZUMI; KIDO MA+, J. CHEM. SOC. PERKIN TRANS, 1981, PART 1, NO 1, 212-217
Thioxanthen-10-io- and 2,4-dimethylthioxanthen-10-io-(bismethoxycarbonyl)methanides and their 9-alkyl derivatives were synthesised by the reaction of the corresponding thioxanthens with bismethoxycarbonylcarbene generated thermally from dimethyl diazomalonate in the presence of copper(II) sulphate. The stereochemistry of the ylides was determined by examination of the n.m.r. spectra and by X-ray analysis