The first method for the synthesis of the title compounds has been established involving a stereoselective electrochemical diacylation process. The cathodic reductions of monothiobenzils in an aprotic medium, under constant potential, in the presence of twofold molecular amounts of aroyl chlorides provide previously unknown (Z)-α-benzoyloxy-β-benzoythiostilbenes in high to quantitative yields.
BAK C.; PRAEFCKE K., CHEM. BER., 1979, 112, NO 7, 2744-2749
作者:BAK C.、 PRAEFCKE K.
DOI:——
日期:——
Electrogeneration of (Z)-α-aroyloxy-β-aroylthiostilbenes and (Z)-4,5-diaryl-2-arylimino-1,3-oxathioles by cathodic reduction of monothiobenzils in the presence of electrophilic reagents. Computational B3LYP and RI-MP2 study on the relative stability of oxathiole compounds
作者:Antonio Guirado、Andrés Zapata、Raquel Andreu、José I. López Sánchez、María D. Paredes、Juan E. López Sánchez、Delia Bautista、Peter G. Jones、Jesús Gálvez
DOI:10.1016/j.tet.2010.12.044
日期:2011.2
Electrochemical reductions of monothiobenzils in the presence of either aroyl or carbonimidoyl dichlorides were carried out, yielding products with sulfur retention. Electrolyses in the presence of aroyl chlorides led to previously unknown (Z)-α-aroyloxy-β-aroylthiostilbenes in high to quantitative yields, whereas reactions in the presence of arylcarbonimidoyl dichlorides provided novel 4,5-diaryl-2-arylimino-1