The Wittig-type Reaction of O=C–, C=C–, and N=C–Substituted Methylenetriphenylphosphoranes with<i>N</i>-Sulfinyl-<i>p</i>-toluenesulfonamide. An Intramolecular 1,3-Dipolar Cyclization of Imidoylconjugated Thione<i>S</i>-Imides
作者:Takao Saito、Michio Nakane、Toshihiko Watanabe、Shinichi Motoki、Kimiko Kobayashi、Tosio Sakurai
DOI:10.1246/bcsj.58.2882
日期:1985.10
The Wittig-type reactions of N-sulfinyl-p-toluenesulfonamide with (1) O=C–, (2) C=C–, and (3) N=C-conjugated phosphorus ylides were investigated. In the reaction with (1), N-sulfinyl-p-toluenesulfonamide reacted at both the ylide and the carbonyl moiety to form TsN=C-conjugated thione S-imide, which underwent intramolecular 1,3-dipolar cycloaddition of the CSN group with the aromatic C=C bond of the tosyl
研究了 N-亚磺酰基-对甲苯磺酰胺与 (1) O=C-、(2) C=C- 和 (3) N=C-共轭磷叶立德的 Wittig 型反应。在与 (1) 的反应中,N-亚磺酰基-对甲苯磺酰胺在叶立德和羰基部分反应形成 TsN=C-共轭硫酮 S-酰亚胺,其经历了 CSN 基团的分子内 1,3-偶极环加成反应甲苯磺酰基的芳族 C=C 键产生结构独特的螺稠合三环加合物。加合物的结构通过X-射线衍射确定。在与 (2) 和 (3) 的反应中,得到 1-氮杂二烯和磺基甜菜碱而不是预期的共轭硫酮 S-酰亚胺。