Method for preparing substituted [1,4]diazepino[6,7,1-hi]indol-4-ones

   
   

Method for the preparation of enantiomerically pure diazepino-indolone of formula ##STR1## which comprises the intramolecular cyclization of a product of formula ##STR2## where A, B, X.sup.1, X.sup.2, Z, Z.sup.1, Z.sup.2 and R are as defined in the description, in the presence of a weak Lewis acid catalyst.

Metodo per la preparazione del diazepino-indolone enantiomerically puro del ## del ## STR1 di formula che contiene la ciclizzazione intramolecolare un prodotto del ## del ## STR2 di formula in cui A, la B, X.sup.1, X.sup.2, la Z, Z.sup.1, Z.sup.2 e le R sono come definiti nella descrizione, in presenza di un catalizzatore debole dell'acido di Lewis.

 
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