primarily formed CF3 adduct A followed by ring closure via the S-atom (Scheme 2). In the case of thiobenzophenones 4, complex mixtures of products were obtained including diarylmethyl trifluoromethyl sulfide 10 and 1,1-diaryl-2,2-difluoroethene 11 (Scheme 4). Obviously, competing thiophilic and carbophilic addition of the CF3 anion took place. The reaction with 9H-fluorene-9-thione (5) yielded only 9,9'-bifluorenylidene
Desulfurization and ortho-metalation reactions of dimanganese decacarbonyl
作者:Howard Alper
DOI:10.1016/s0022-328x(00)83835-8
日期:1974.7
react with dimanganesedecacarbonyl in refluxing heptane to produce olefins (and a sulfur manganese carbonyl complex) in good yield. 4,4′-Bis(dialkylamino)thiobenzophenones reacted with the metal carbonyl to give sulfur-donor ligand ortho-metalated complexes as the major product and 4,4′-bis(dialkylamino)diphenylmethanes as by-products. A mechanistic scheme is proposed for these reactions.
Blue LED-Mediated Synthesis of 3-Arylidene Oxindoles
作者:Sengodagounder Muthusamy、Chinnathambi Ramesh
DOI:10.1021/acs.joc.3c00099
日期:2023.5.5
Blue LED-promoted cross-coupling olefination of symmetrical and unsymmetrical 3-arylidene oxindoles has been described from diazoindolones and diphenylmethanethiones. Thermal olefin isomerization and stereoselective synthesis of 3-arylidene oxindoles were also demonstrated in good yield.
蓝色 LED 促进的对称和不对称 3-亚芳基羟吲哚的交叉偶联烯化已从重氮吲哚酮和二苯基甲硫酮中得到描述。还证明了 3-亚芳基羟吲哚的热烯烃异构化和立体选择性合成具有良好的产率。