Novel photochemical ring contraction of 1,4,7,10-tetraisopropyldibenzo[c,g][1,2,5,6]tetrachalcogenocins: efficient synthesis, structure, and redox reactions of 1,4,6,9-tetraisopropylchalcogenanthrenes
作者:Satoshi Ogawa、Mutsumi Sugawara、Yasushi Kawai、Shigeya Niizuma、Takeshi Kimura、Ryu Sato
DOI:10.1016/s0040-4039(99)01931-0
日期:1999.12
1,4,7,10-Tetraisopropyldibenzo[c,g][1,2,5,6]tetrachalcogenocins, which were readily synthesized from 4,7-diisopropyl-2,2-dimethyl-1,3,2-benzodichalcogenastannoles, underwent selective ring contraction under irradiation with a high-pressure mercury lamp to give the corresponding 1,4,6,9-tetraisopropylchalcogenanthrenes in moderate yields. Facile one-electron redox reactions were observed between the
1,4,7,10-四异丙基二苯并[ c,g ] [1,2,5,6]四硫属元素生成素,可以很容易地由4,7-二异丙基-2,2-二甲基-1,3,2-苯并二卤代锡环合成在高压汞灯的照射下进行选择性环收缩,以中等收率得到相应的1,4,6,9-四异丙基硫代蒽蒽。通过化学或电化学处理,在硫属元素蒽与相应的稳定硫属元素蒽re基阳离子之间观察到容易的单电子氧化还原反应。