S. Chahboun et al., CONFORMATIONAL RESTRICTED 3-METHYL-2-PHEN YLPIPERAZINES - SYNTHESIS OF 2,3,4,4A,9,9A-HEXAHYDRO-1H-INDENO[1,2-B]PYRAZINES - POTENTIAL ANTIDEPRESSANTS, Bulletin des Societes chimiques belges, 105(5), 1996, pp. 287-296
The synthesis of various diastereoisomeric (+/-) trans- (VIII) and cis
-2,3,4,4a,9,9a-hexahydro-1H-indeno[1,2-b] pyrazines (IX) is described,
using as key step for piperazine ring formation an alkoxyphosphonium
salt. Compound VIIIa was prepared as a potential serotonin reuptake in
hibitor.