Titanocene(III) Chloride Mediated Radical Induced Allylation of Aldimines: Formal Synthesis of C-Linked 4′-Deoxy Aza-disaccharide
作者:Sumit Saha、Subhas Chandra Roy
DOI:10.1021/jo200908b
日期:2011.9.2
Titanocene(III) chloride (Cp2TiCl) mediated radical induced allylation of aldimines for the preparation of homoallyl amines is described. The radical was generated from the allylbromide using Cp2TiCl as the radical source. Formal synthesis of C(4)–C(5′)-linked 4′-deoxy aza-disaccharide is demonstrated and a study toward the bicyclic skeleton of alkaloids was also accomplished. The radical initiator
A novel series of homoallylic amines as potential antimicrobials
作者:U. Sankappa Rai、Arun M. Isloor、Prakash Shetty、Nishitha Isloor、Mahesh Padaki、Hoong-Kun Fun
DOI:10.1007/s00044-011-9607-3
日期:2012.7
An efficient catalytic three-component reaction of aldehydes, amines, and allyltributylstannate has been successfully developed to produce homoallylic amines at 25A degrees C, in excellent yields, in the presence of 1 mol% of trifluoroacetic acid an inexpensive and environmentally friendly catalyst. Newly synthesized compounds were confirmed by spectral studies. Compound 3o was characterized by single crystal X-ray analysis. All the compounds were also screened for their antimicrobial activity. Halogen-substituted compounds namely 3d, 3g, 3n, and 3o have showed excellent antibacterial activity.
YTTERBIUM METAL/TMSCL PROMOTED REACTION OF IMINES WITH ALLYLIC BROMIDE
作者:Weike Su、Jinghua Li、Yongmin Zhang
DOI:10.1081/scc-100000209
日期:——
In the presence of chlorotrimethylsilane (TMSCl), ytterbium metal can promote the allylation of imines with allylic bromide to give the corresponding homoallylamines in satisfactory yields in THF under mild conditions.