| abstract |
Invention Patent: "PREPARATION PROCESS FOR [1,4] DIAZEPINE [6,7,1-hi] INDOL-4-ONAS SUBSTITUTED". Method of preparing enantiomerically pure diazepine-indolone of formula (I) which comprises the intramolecular cyclization of a product of formula (II) in which A, B, X ^ 1 ^, X ^ 2 ^, Z, Z ^ 1 ^, Z2 and R2 are as defined in the description, in the presence of a weak Lewis acid catalyst. |