abstract |
TRANSAMINO ACID DERIVATIVE, AND PROCESSES FOR PREPARING THEREOF AND PREPARING ASENAPINE. Novel amino acid derivatives of formulas (I) and processes for their preparation and use thereof in the preparation of trans-5-chloro-2-methyl-2,3,3a, 12b-tetrahydro-1H-dibenz [2, 3: 6,7] oxepino-5 [4,5-c] pyrrol. |