Reactivities of heteroaromatic cations containing a Group VIB element in nucleophilic reactions. Reactions of 9-phenyl-xanthylium, -thioxanthylium, and -selenoxanthylium salts with amines, sodium phenolate, and sodium benzenethiolate
作者:Mikio Hori、Tadashi Kataoka、Hiroshi Shimizu、Chen Fu Hsu、Yukio Hasegawa、Noriko Eyama
DOI:10.1039/p19880002271
日期:——
Reactions of 9-phenylchalcogenoxanthylium salts (1a–c) with some nucleophiles have been examined in order to find the differences in reactivity in nucleophilic reactions. The chalcogenoxanthylium salts (1a–c) react with aniline in ether to give 9-anilino-9-phenylchalcogenoxanthenes (7a–c). However, in acetonitrile the xanthylium salt (1a) affords N,4-bis(9-phenylxanthen-9-yl)aniline (9a) together with
为了发现亲核反应中反应性的差异,已经研究了9-苯基硫族氧杂蒽鎓盐(1a – c)与某些亲核试剂的反应。硫属氧杂蒽鎓盐(1a – c)与苯胺在乙醚中反应,生成9-苯胺基-9-苯基硫属氧杂蒽酮(7a – c)。但是,在乙腈中,x吨盐(1a)可以与N,4-双(9-苯基黄嘌呤-9-基)苯胺(9a)以及苯胺基an吨(7a)(在室温下)或9-(对-氨基苯基)-一起提供9-苯基x吨(8a)(回流)和硫(1b)和硒衍生物(1c)分别仅提供苯胺基衍生物(7b,c)。