Copper nanoparticles catalyzed N-H functionalization: An efficient solvent-free N-tert-butyloxycarbonylation strategy
作者:Barnali Deb、Sudipto Debnath、Anindita Deb、Dilip K. Maiti、Swapan Majumdar
DOI:10.1016/j.tetlet.2016.12.091
日期:2017.2
chemoselective transformation of amines to their tert-butyloxycarbonyl (Boc) protected derivatives (NBoc) is described using Cu-NPs under solvent-free conditions. Simple method, rapid reaction rate, mildconditions, tolerance of a wide range of functional groups, excellent yield, ease recovery and high catalytic turnover are the salient features of this approach. tert-Butyloxycarbonylation of chiral amino acid
Synthesis of Unnatural α-Amino Acids from (Pyridin-2-yl) Carbamate via CIPE-Induced Carbonyl Migration
作者:Juhui Wang、Aiwen Huo、Xiang Li、Yue Li、Yan Zhang、Tengda Jin、Keju Sun、Jingyue Yang
DOI:10.1021/acs.joc.2c01283
日期:2022.11.4
Synthetic methods of unnatural α-amino acids have always been the focus of extensive research due to their significant bioactivities. However, convenient transition-metal-free catalyzed methods are still in demand. Herein, we report a novel strategy for the construction of an unnatural α-amino acid skeleton via intramolecular rearrangement of carbamates, which are readily available fromamines and their