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 nucleophilicreactions. 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