| 摘要 |
PCT No. PCT/EP97/05972 Sec. 371 Date May 3, 1999 Sec. 102(e) Date May 3, 1999 PCT Filed Oct. 29, 1997 PCT Pub. No. WO98/21192 PCT Pub. Date May 22, 1998The present invention provides a process for the production of 1,8-naphthosultam comprising reacting 1-naphthylamine-8-sulfonic acid with excess POCl3 or PCl3 in the presence, as a proton acceptor, of a mono-, di-, or preferably tri-C1-C4 alkylamine, and in the presence, as a reaction solvent, of mono-, di-, or tri-C1-C4 alkylbenzene. |
