Tetraphenylbismuth monotrifluoroacetate: a new reagent for regioselective aryl ether formation
作者:Derek H. R. Barton、Jean-Claude Blazejewski、Brigitte Charpiot、William B. Motherwell
DOI:10.1039/c39810000503
日期:——
Tetraphenylbismuth trifluoroacetate is a useful newreagent for selective formation of the aryl–oxygen bond, and in its reactivity complements the behaviour of other Biv arylating agents.
Polyarylene thioethers are easily prepared by an oxidative polymerization of an aromatic compound of the formula (I)
wherein R¹, R², R³ and R⁴ are each independently a hydrogen atom, a halogen atom, a lower alkyl group or a lower alkoxy group, and Y is a hydrogen atom or a group of the formula (II)
wherein R⁵, R⁶, R⁷ and R⁸ are each independently a hydrogen atom, a halogen atom, a lower alkyl group or a lower alkoxy group and X is -O-, -S-, a methylene group or an ethylene group with a sulfidizing agent in the presence of an acid and an oxidizing agent, or in the presence of an acid, a catalyst for oxidative polymerization and oxygen, or in the presence of a Friedel-Crafts catalyst.