applied for the reductiveamination of aldehydes and ketones with nitroaromatics and amines using H2. The iridium catalysts were prepared by pyrolysis of ionic liquid 1‐methyl‐3‐cyanomethylimidazoulium chloride ([MCNI]Cl) with iridium chloride (IrCl3) in activatedcarbons. Iridium particles were well dispersed and stable in the N‐doped carbon materials from [MCNI]Cl with activatedcarbon. The Ir@NC(600‐2h)
Access to <i>gem</i>-Difluoro Olefins via C–H Functionalization and Dual Role of Anilines
作者:Zhen Yang、Chao Pei、Rene M. Koenigs
DOI:10.1021/acs.orglett.0c02568
日期:2020.9.18
In this Letter, we describe a simple, practical approach in which cheap CuI was used as a catalyst to introduce a gem-difluoro olefin onto simple electron-rich aniline derivatives in good yield via direct C–H functionalization and a subsequent HF elimination reaction. Detailed mechanistic studies point at a dual role of aniline derivatives in this reaction, which serve as a substrate and a basic promoter
Highly Chemoselective Reductive Amination of Carbonyl Compounds Promoted by InCl<sub>3</sub>/Et<sub>3</sub>SiH/MeOH System
作者:On-Yi Lee、Ka-Lun Law、Chun-Yu Ho、Dan Yang
DOI:10.1021/jo8016082
日期:2008.11.21
A new strategy has been developed for reductiveamination of aldehydes and ketones with the InCl3/Et3SiH/MeOH system, which is a nontoxic system with highlychemoselective and nonwater sensitive properties. The methodology can be applied to a variety of cyclic, acyclic, aromatic, and aliphatic amines. Functionalities including ester, hydroxyl, carboxylic acid, and olefin are found to be stable under
Heterogeneous Co@NC catalysts were prepared, characterized and applied for the reductive amination of aldehydes and ketones with H2 gas. The Co catalyst Co@NC (800-2h) was found to be active and...
Chemoselective Reductive Amination of Carbonyl Compounds for the Synthesis of Tertiary Amines Using SnCl<sub>2</sub>·2H<sub>2</sub>O/PMHS/MeOH
作者:Onkar S. Nayal、Vinod Bhatt、Sushila Sharma、Neeraj Kumar
DOI:10.1021/acs.joc.5b00156
日期:2015.6.5
Stannous chloride catalyzed chemoselective reductive amination of a variety of carbonyl compounds with aromatic amines has been developed for the synthesis of a diverse range of tertiary amines using inexpensive polymethylhydrosiloxane as reducing agent in methanol. The present method is also applicable for the synthesis of secondary amines including heterocyclic ones.