Reactions of Benzyne with 1,3-Benzodithiole-2-thione and Related Compounds: Formation of Novel Tetracyclic Sulfonium Salts and Their Reactions Leading to Dibenzo-1,3,6,-trithiocin Derivatives
作者:Juzo Nakayama、Atsuko Kimata、Hideki Taniguchi、Fumihiko Takahashi
DOI:10.1246/bcsj.69.2349
日期:1996.8
chloride (7), in good yield when benzyne was generated by the thermolysis of 2-carboxybenzenediazonium chloride (4). The reaction of ethylene trithiocarbonate with excess 4 provided a convenient one-pot synthesis of 7 in large quantities. The reduction of 7 with NaBH4 gave a novel ring compound, dibenzo[d,g][1,3,6]trithiocin (15), in 95% yield, while alkaline hydrolysis produced the 12-oxide derivative of
通过 1,3-苯并二硫醇-2-硫酮 (5) 与苄的 1,3-偶极环加成反应生成的硫叶立德中间体被氯化氢成功捕获,得到新型四环锍盐 9aH-9,10- dithia-4b-thioniaindeno[1,2-a] 茚氯化物 (7),当通过 2-羧基苯重氮氯化物 (4) 热解生成苯时,产率良好。三硫代碳酸亚乙酯与过量 4 的反应提供了方便的一锅法大量合成 7。7 用 NaBH4 还原得到一种新的环化合物二苯并[d,g][1,3,6]三硫辛 (15),产率为 95%,而碱水解产生 15 的 12-氧化物衍生物。 7 与 t-BuOK 以 84% 的产率得到 6,6'-双(二苯并[d,g][1,3,6]三亚硫基)。还描述了苄与 5 的相关化合物的反应。