这里描述的是路易斯酸性硼烷催化剂介导的α,β-不饱和醛的还原胺化/氢化硅烷化级联。本反应系统提供了一种单罐合成路线,可通往其他先前催化无法达到的β-甲硅烷基化仲胺。对亚胺的甲硅烷基化还原进行的比较1 H NMR研究表明,伯胺反应物的空间体积极大地影响了催化效率和区域选择性。该策略适用于广泛的底物,并适用于一锅克级合成。此外,还发现非对映选择性地引入β-甲硅烷基是可行的(dr高达71:29)。
Copper-Catalyzed One-Pot Synthesis of 2-Alkylidene-1,2,3,4- tetrahydropyrimidines
作者:Wei Lu、Wangze Song、Deng Hong、Ping Lu、Yanguang Wang
DOI:10.1002/adsc.200900260
日期:2009.8
A one-potsynthesis of N-sulfonyl-2-alkylidene-1,2,3,4-tetrahydropyrimidines via a highly selective and copper-catalyzed multicomponent reaction of sulfonylazides, terminal alkynes and α,β-unsaturated imines has been developed. The α,β-unsaturated imine substrates could be generated from amines and α,β-unsaturated aldehydes in a one-pot process. The procedure is concise, general and efficient.
In situ hydrogen from aqueous-methanol for nitroarene reduction and imine formation over an Au–Pd/Al2O3 catalyst
作者:Yizhi Xiang、Qiangqiang Meng、Xiaonian Li、Jianguo Wang
DOI:10.1039/c0cc00531b
日期:——
In situ hydrogenfrom aqueous-methanol, instead of H(2) or CO, was used to synthesize imines with a high selectivity from nitroarenes and carbonyl compounds over an Au-Pd/Al(2)O(3) catalyst.
One-pot, three-component synthesis of highly functionalized 1,3-oxazine derivatives from α,β-unsaturated imine, alkyne, and aldehyde
作者:Ming Lei、Zujin Zhan、Wan Tian、Ping Lu
DOI:10.1016/j.tet.2012.02.041
日期:2012.4
The 1,4-dipoles generated from imines and DMAD have been shown to react efficiently with benzylaldehyde dipolarphiles in one-pot [4+2] annulation resulting in the diversity oriented synthesis of 1,3-oxazine derivatives in good to excellent yields.
Senier; Shepheard, Journal of the Chemical Society, 1909, vol. 95, p. 1954
作者:Senier、Shepheard
DOI:——
日期:——
Exclusive Chemoselective Reduction of Imines in the Coexistence of Aldehydes Using AuNPore Catalyst
作者:Balaram S. Takale、Shan Mou Tao、Xiao Qiang Yu、Xiu Juan Feng、Tienan Jin、Ming Bao、Yoshinori Yamamoto
DOI:10.1021/ol500958p
日期:2014.5.2
Aldimines ((RHC)-H-1=NR2) were reduced in the coexistence of aldehydes ((RCHO)-C-1) with 100% chemoselectivity by the use of AuNPore giving corresponding amines ((RH2C)-H-1-NHR2) in high chemical yields.