An improved method of ring closing metathesis in the presence of basic amines: application to the formal synthesis of (+)-lentiginosine and other piperidines and carbamino sugar analogs
摘要:
A generalized method for performing ring closing metathesis in the presence of basic amines has been established and successfully used in the formal synthesis of (+)-lentiginosine as well as some valuable intermediates for the synthesis of several other azasugars and aminocyclitols. (C) 2010 Elsevier Ltd. All rights reserved.
Synthetic and Mechanistic Studies of Indium-Mediated Allylation of Imines in Ionic Liquids
作者:Man Chun Law、Tin Wai Cheung、Kwok-Yin Wong、Tak Hang Chan
DOI:10.1021/jo062198x
日期:2007.2.1
Aldimines derivedfrom aryl and non-enolizable aliphatic aldehydes were allylated with allyl bromide mediated by indium powder in [bpy][BF4] (bpy = N-butylpyridine) to give good yields of the corresponding homoallylic amines. Selective formation of monoallylated amines can be achieved by varying the amount of bromide ion additive in the form of [bpy][Br]. The transient organoindium intermediates, allylindium(I)
An improved method of ring closing metathesis in the presence of basic amines: application to the formal synthesis of (+)-lentiginosine and other piperidines and carbamino sugar analogs
作者:Rima Lahiri、Hari Prasad Kokatla、Yashwant D. Vankar
DOI:10.1016/j.tetlet.2010.12.020
日期:2011.2
A generalized method for performing ring closing metathesis in the presence of basic amines has been established and successfully used in the formal synthesis of (+)-lentiginosine as well as some valuable intermediates for the synthesis of several other azasugars and aminocyclitols. (C) 2010 Elsevier Ltd. All rights reserved.