| 摘要 |
PCT No. PCT/US86/02831 Sec. 371 Date Feb. 9, 1987 Sec. 102(e) Date Feb. 9, 1987 PCT Filed Dec. 30, 1986 PCT Pub. No. WO87/04149 PCT Pub. Date Jul. 16, 1987.N-secondary-alkyldiorganoaminopyridinium salts are disclosed which are useful as phase transfer catalysts for facilitating preparation of fluoroaromatic compounds (such as fluoronitrobenzene compounds) from the corresponding chloroaromatic compounds (such as chloronitrobenzene compounds). |
