DIAMINE SYNTHESIS VIA CATALYTIC C-H AMINATION OF AZIDES
申请人:Zhang X. Peter
公开号:US20120101271A1
公开(公告)日:2012-04-26
Selective intramolecular C—H amination via metalloradical activation of azides: synthesis of 1,3-diamines under neutral and nonoxidative conditions. One aspect of the present invention is the synthesis of 1,3-diamines by intramolecular C—H amination of sulfamoyl azides. More specifically, sulfamoyl azides may be selectively aminated via metalloradical activation of azides, preferably with Co(II) porphyrins. In a particularly preferred embodiment, the Co(II) porphyrin is a D
2h
-symmetric porphyrin.
An enzymatic platform for the asymmetric amination of primary, secondary and tertiary C(sp3)–H bonds
作者:Yang Yang、Inha Cho、Xiaotian Qi、Peng Liu、Frances H. Arnold
DOI:10.1038/s41557-019-0343-5
日期:2019.11
report enzyme catalysts derived from a cytochrome P450 that use a nitrenetransfer mechanism for the enantioselective amination of primary, secondary and tertiary C(sp3)-H bonds. These fully genetically encoded enzymes are produced and function in bacteria, where they can be optimized by directed evolution for a broad spectrum of enantioselective C(sp3)-H amination reactions. These catalysts can aminate
Selective Intramolecular CH Amination through the Metalloradical Activation of Azides: Synthesis of 1,3-Diamines under Neutral and Nonoxidative Conditions
作者:Hongjian Lu、Huiling Jiang、Lukasz Wojtas、X. Peter Zhang
DOI:10.1002/anie.201005552
日期:2010.12.27
N2 is the only by‐product in a stereospecific and highly diastereoselective intramolecularCH amination of sulfamoyl azides with a cobalt(II)‐based metalloradical catalyst (see scheme). The catalytic system has an unusual capacity for the efficient amination of strong primary CH bonds, as well as secondary and tertiary CH bonds, and functional‐group tolerance is excellent owing to the neutral and