| 摘要 |
PCT No. PCT/EP96/00004 Sec. 371 Date Dec. 24, 1996 Sec. 102(e) Date Dec. 24, 1996 PCT Filed Jan. 3, 1996 PCT Pub. No. WO96/21649 PCT Pub. Date Jul. 18, 1996A novel process for the preparation of 10-0x0-10,11-dihydro-5H-dibenz(b,f)azepin-5-carboxamide (VI) consists of starting group 10-methoxy-5H-dibenz(b,f)azepine (IV) and subjecting compound (IV) to direct carbamoylation with isocyanic acid generated in situ from cyanates and acids and then subjecting the product to acid hydrolysis of the enol ether. An alternative process to obtain (VI) starts (IV) effecting the hydrolysis reaction before the carbamoylation. In this case the carbamoylating agent is chlorosulfonyl isocyanate. |
