Selective reduction and cleavage of the N-N bond of fused tetrahydropyridazines: a route to functionalised lactams
作者:Thomas L. Gilchrist、Deborah Hughes、Robert Wasson
DOI:10.1016/s0040-4039(01)81045-5
日期:1987.1
The CN bond of 4,4a,5,6-tetrahydropyrrolo[1,2-]pyridazin-7(3)-ones (3) is reduced with high stereoselectivity by hydrogen over Adams' catalyst; the products (6) are -acetylated and the N-N bond can then be cleaved by sodium in liquid ammonia to give the lactams (7).
4,4a,5,6-四氢吡咯并[1,2- ]哒嗪-7(3 )-ones(3)的CN键在亚当斯催化剂上被氢高立体选择性地还原。产物(6)被-乙酰化,然后NN键可以被液态氨中的钠裂解而得到内酰胺(7)。