Abstract A highlyefficientone-pot, three-component synthesis of β-aminoketones was demonstrated using the cost-effective, noncorrosive, and easily available Fe(O2CCF3)3 as a catalyst for the first time. The method can be employed to synthesize a wide range of target compounds and to introduce different functional groups into the β-aminoketone skeleton. Additionally, the method consistently has the
The direct-Mannich reaction of ketones 1, aldehydes 2, and anilines 3 was studied using catalytic amount of transition-metal complexes. The trivalentiridiumcomplex, [IrCl2(H)(cod)]2, catalyzed th...
AbstractWe found that the trypsin from hog pancreas displayed high activity to promote three‐component Mannich reaction of aromatic aldehydes, aromatic amines, and acetone with moderate‐to‐excellent yields. The reaction tolerates a great range of substrates and extends the application of trypsin in organic synthesis.
Direct Mannich reaction mediated by Fe(Cp)2PF6 under solvent-free conditions
作者:Rukhsana I. Kureshy、Santosh Agrawal、S. Saravanan、Noor-ul H. Khan、Arpan K. Shah、Sayed H.R. Abdi、Hari C. Bajaj、E. Suresh
DOI:10.1016/j.tetlet.2009.11.022
日期:2010.1
Fe(Cp)(2)PF6 (5 mol %) efficiently catalyzed Mannich reaction of aldehydes, anilines, and ketones under solvent-free condition to give beta-amino-ketones in high yield (up to 94%) within 30 min with anti-isomer in excess. Simple experimental conditions and product isolation procedure makes this protocol potential for the development of clean and environment-friendly strategy for the synthesis of beta-amino-ketones. (C) 2009 Elsevier Ltd. All rights reserved.