The Lithium Diisopropylamide-Induced Fragmentation of 2,2-Diphenyl-1,3-dithiolane<i>S</i>-Oxide and Several 2,2-Diaryl-1,3-dithiolane<i>S</i>,<i>S</i>′-Dioxides
作者:Yoshihiko Inoue、Shigeo Tanimoto、Tatsuo Oida
DOI:10.1246/bcsj.59.3897
日期:1986.12
The reaction of 2,2-diphenyl-1,3-dithiolane S-oxide with lithium diisopropylamide results in fragmentation to thiobenzophenone followed by further conversion leading to alkyl diphenylmethyl sulfide on trapping with alkyl halide. The reaction of 2,2-diaryl-1,3-dithiolane S,S′-dioxides with lithium diisopropylamide proceeded smoothly to afford 1,1-diaryl-N,N-diisopropylmethanesulfinamides in moderate yields via the intermediate diaryl thioketone S-oxides.
2,2-二苯基-1,3-二硫环戊烷 S-氧化物与二异丙基酰胺锂发生反应,破碎成硫代二苯甲酮,然后与卤化烷基阱发生进一步转化,生成烷基二苯基甲基硫醚。2,2-二芳基-1,3-二硫环戊烷 S,S′-二氧化物与二异丙基酰胺锂的反应顺利进行,通过中间体二芳基硫酮 S-氧化物以中等产率得到 1,1-二芳基-N,N-二异丙基甲磺酰胺。