Ruthenium-Catalyzed One-Pot Carbenoid N−H Insertion Reactions and Diastereoselective Synthesis of Prolines
作者:Qing-Hai Deng、Hai-Wei Xu、Angella Wing-Hoi Yuen、Zhen-Jiang Xu、Chi-Ming Che
DOI:10.1021/ol800087p
日期:2008.4.1
3-hydroxyprolines and various other amino esters are conveniently prepared by [RuCl2(p-cymene)]2-catalyzed one-pot intramolecular and intermolecular carbenoid N-H insertionreactions, respectively, and the prolines are formed with high diastereoselectivities. The catalytic reactions are tolerant toward air/moisture, and the product yields are insensitive to the organic solvents used.
Photoreduction of imines. An environmentally friendly approach to obtain amines
作者:María Ortega、Miguel A. Rodríguez、Pedro J. Campos
DOI:10.1016/j.tet.2005.09.047
日期:2005.12
The photoreduction of different imines to amines in alcoholic solvents is reported. The reduction involves a versatile and chemoselective methodology that is environmentally friendly in that it avoids the use of metal hydrides and other dangerous reducing agents.