Ethyl 2-(methylthiomethyl)phenyl selenide 1a, telluride 1b and ethyl 2-(methylselanylmethyl)phenyl telluride 1c were prepared and treated with 1 equivalent of triflic anhydride (Tf2O) or 2 equivalents of nitrosonium salts (NOBF4 or NOPF6) at low temperature to generate the corresponding selenathia, tellurathia and telluraselena dications(2a, 2b and 2c), the structures of which were determined by NMR spectroscopy and 2b was successfully isolated.
制备了乙基 2-(甲
硫基
甲基)
苯基
硒化物 1a、
碲化物 1b 和乙基 2-(甲
硫基
甲基)
苯基
碲化物 1c,并在低温下用 1 个等量的三酸酐(Tf2O)或 2 个等量的硝基锍盐(
NOBF4 或
NOPF6)处理,生成相应的
硒化物、通过核磁共振光谱测定了它们的结构,并成功地分离出了 2b。