Copper-Catalyzed Aliphatic C–H Amination with an Amidine Moiety
摘要:
A method for amination of aliphatic C-H bonds of N-alkylamidines is described that utilizes Cu(OAc)(2) as the catalyst in the presence of Phl(OAc)(2) and K3PO4. The resulting products, dihydroimidazoles and tetrahydropyrimidines, could be converted into the corresponding diamines by hydride reduction.
Copper-catalyzed redox-neutral C–H amination with amidoximes
作者:Hui Chen、Shunsuke Chiba
DOI:10.1039/c3ob41871e
日期:——
CuI-catalyzed reactions of N-alkylamidoximes afforded dihydroimidazoles via sp3 CâH amination. On the other hand, the reactions of N-benzoylamidoximes resulted in sp2 CâH amination to form quinazolinones. The reaction mechanisms could be characterized as a redox-neutral radical pathway including a Cu(I)âCu(II) redox catalytic cycle.
A method for amination of aliphatic C-H bonds of N-alkylamidines is described that utilizes Cu(OAc)(2) as the catalyst in the presence of Phl(OAc)(2) and K3PO4. The resulting products, dihydroimidazoles and tetrahydropyrimidines, could be converted into the corresponding diamines by hydride reduction.