Synthesis, structure, and one-electron redox reactions of 4,7-disubstituted benzotrichalcogenoles containing sulfur and/or selenium atoms
作者:Satoshi Ogawa*、Tadahito Ohmiya、Takamasa Kikuchi、Atsuko Kawaguchi、Satoshi Saito、Akihiko Sai、Naomi Ohyama、Yasushi Kawai、Shigeya Niizuma、Shiduko Nakajo、Takeshi Kimura、Ryu Sato*
DOI:10.1016/s0022-328x(00)00328-4
日期:2000.10
Stable 4,7-disubstituted benzotrichalcogenoles containing sulfur and/or selenium atoms in the five-membered ring were systematically and selectively prepared in good yields by reaction of the corresponding benzodichalcogenastannoles, a synthetic equivalent of benzenedichalcogenols, with an S1 or Se1 source. Characterization of these new trichalcogenole frameworks was performed by multi-nuclear NMR
通过使相应的苯并二氢古丁环(合成的苯二氢古丁醇)与S 1或Se 1来源反应,以高收率系统且选择性地系统稳定地选择性制备了在五元环中含有硫和/或硒原子的稳定的4,7-二取代的苯并三氢苯并茂。通过多核NMR研究和X射线晶体学分析对这些新的三hal烯骨架进行了表征。三氯gen烯的循环伏安图显示了定义明确的可逆的电化学氧化还原对,具有低氧化电位。用一当量的NOPF 6在三氯gen烯的单电子氧化中以定量产率分离出新颖的自由基离子作为单电子氧化剂。自由基阳离子盐的结构通过31 P-NMR和EPR光谱分析以及元素分析。盐在用一当量的碘化sa(II)处理后进行了一次电子还原,从而定量给出了中性的起始三氯甲酚。