A novel process for the preparation of 10-0.times.0-10,11-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.
一种制备10-0.times.0-10,11-二氢-5H-二苯并(b,f)氮杂莰-5-甲酰胺(VI)的新工艺包括以起始物10-甲氧基-5H-二苯并(b,f)氮杂莰(IV)并将化合物(IV)直接与
异氰酸酯生成的异
氰酸基进行羰基化反应,然后将产物经过酸
水解醚化合物。另一种获得(VI)的替代工艺从(IV)开始,在进行羰基化反应之前进行
水解反应。在这种情况下,羰基化试剂是
氯磺酰异氰酸酯。