SYNTHESIS OF 2,3,6,7-TETRAHYDRO-1H-1,4-DIAZEPINES AND 2,3,4,5,6,7-HEXAHYDRO-1H-1,4-DIAZEPINES VIA A TANDEM MICHAEL-TYPE ADDITION INTRAMOLECULAR AZA-WITTIG SEQUENCE
A. Benalil et al., SYNTHESIS OF 2,3,6,7-TETRAHYDRO-1H-1,4-DIAZEPINES AND 2,3,4,5,6,7-HEXAHYDRO-1H-1,4-DIAZEPINES VIA A TANDEM MICHAEL-TYPE ADDITION INTRAMOLECULAR AZA-WITTIG SEQUENCE, Journal of the Chemical Society. Perkin transactions. I, (9), 1993, pp. 1061-1064
Intramolecular aza-Wittig reaction of azides derived from 1,2-amino az
ides and alpha,beta-unsaturated ketones leads to 2,3,6,7-tetrahydro-1
H-1,4-diazepines. Reduction of these compounds with lithium aluminium
hydride affords the corresponding saturated heterocycles.