Iron-catalyzed transfer hydrogenation of imines assisted by an iron-based Lewis acid
作者:Hui-Jie Pan、Teng Wei Ng、Yu Zhao
DOI:10.1039/c5ob02119g
日期:——
An iron-catalyzed transfer hydrogenation of N-aryl and N-alkyl imines using isopropanol as the hydrogen donor is reported for the first time.
报道了首次使用异丙醇作为氢供体进行铁催化的N-芳基和N-烷基亚胺的转移氢化反应。
Rhodium(I)-catalysed asymmetric hydrogenation of imines
作者:Guo-Jun Kang、William R. Cullen、Michael D. Fryzuk、Brian R. James、James P. Kutney
DOI:10.1039/c39880001466
日期:——
The imines ArC(Me)NCH2Ph (Ar = Ph, 2-MeO-C6H4, 4-MeO-C6H4) are hydrogenated to the corresponding secondary amines at 1000 psig H2, in 1 : 1 C6H6/MeOH, using an in situ RhI/(R)-cycphos system (cycphos = Ph2PCH(C6H11)CH2PPh2); a maximum of 91% enantiomeric excess (e.e.) is achieved at lower temperatures (–25 °C) in the presence of iodide cocatalyst.
亚胺ArC(Me)NCH 2 Ph(Ar = Ph,2-MeO-C 6 H 4,4 -MeO-C 6 H 4)在1:1 C下以1000 psig H 2氢化为相应的仲胺6 H 6 / MeOH,使用原位Rh I /(R)-环磷系统(环磷= Ph 2 PCH(C 6 H 11)CH 2 PPh 2);在碘化物助催化剂存在下,在较低的温度(–25°C)下,最多可获得91%的对映体过量(ee)。
Becalski, Adam G.; Cullen, William R.; Fryzuk, Michael D., Inorganic Chemistry, 1991, vol. 30, # 26, p. 5002 - 5008
作者:Becalski, Adam G.、Cullen, William R.、Fryzuk, Michael D.、James, Brian R.、Kang, Guo-J.、Rettig, Steven J.
DOI:——
日期:——
Sequential Reductive Amination-Hydrogenolysis: A One-Pot Synthesis of Challenging Chiral Primary Amines
作者:Thomas C. Nugent、Daniela E. Negru、Mohamed El-Shazly、Dan Hu、Abdul Sadiq、Ahtaram Bibi、M. Naveed Umar
DOI:10.1002/adsc.201100250
日期:2011.8
Difficult-to-access chiralprimaryamines were formed in good to high yield and ee using a rare example of a one-potsynthesis from prochiral ketones (sequentialreductive amination-hydrogenloysis). As a highlight we also demonstrate a one-potreductive amination-hydrogenolysis-reductive amination (five reactions) of ortho-methoxyacetophenone resulting in the chiral diamine 1-(2-methoxyphenyl)ethy