Boron-Catalyzed <i>N</i>-Alkylation of Arylamines and Arylamides with Benzylic Alcohols
作者:Murali Mohan Guru、Pradip Ramdas Thorve、Biplab Maji
DOI:10.1021/acs.joc.9b02816
日期:2020.1.17
A sustainable boron-based catalytic approach for chemoselective N-alkylation of primary and secondary aromatic amines and amides with primary, secondary, and tertiary benzylic alcohols has been presented. The metal-free protocol operates at low catalyst loading, tolerates several functional groups, and generates H2O as the sole byproduct. Preliminary mechanistic studies were performed to demonstrate
Enantioselective Synthesis of <i>trans</i>
-Vicinal Diamines <i>via</i>
Rhodium-Catalyzed [2+2] Cycloaddition of Allenamides
作者:Wei-Feng Zheng、Gui-Jun Sun、Liang Chen、Qiang Kang
DOI:10.1002/adsc.201800021
日期:2018.5.2
An efficient protocol for the enantioselective Rh‐catalyzed intermolecular head‐to‐head [2+2] cycloaddition of allenamides was developed. A variety of enantio‐enriched cyclobutane‐1,2‐diamine derivatives were achieved in good yields with good to excellent enantioselectivities.
1-Acetyl-2,3-Dimethylimidazolidine: A Novel Organic Reductant for Transfer Hydrogenation
作者:Wei Guo、Donghong Li、Yongbin Zhang、Guofu Zhou
DOI:10.1055/s-2007-1000863
日期:2008.1
1-Acetyl-2,3-dimethylimidazolidine was synthesized and was shown to be able to directly reduce a series of aromatic, aliphatic and α,β-unsaturated aldehydes as well as imines in high yields.