The preparation of functionalized amines and amides using benzotriazole derivatives and organozinc reagents
摘要:
Secondary and tertiary amines 6 are conveniently prepared in good yields by reacting organozinc halides with adducts 4, which are derived from the corresponding amines, aldehydes and benzotriazole. The use of organozinc reagents enables the introduction of nitro, cyano or ester functionalities into amine mainframes. This methodology was also used to prepare functionalized amides 8. (C) 1998 Elsevier Science Ltd. AII rights reserved.
Reductive N-Arylethylation of Aromatic Amines and N-Heterocycles with Enol Ethers
作者:Franz Bracher、Katharina Vögerl、Duc Ong
DOI:10.1055/s-0036-1591859
日期:2018.3
N-arylethylation of aromatic amines and heterocycles under mild reductive conditions was developed using (2-methoxyvinyl)(hetero)arenes as building blocks and triethylsilane/trifluoroacetic acid as reducing agent. This protocol is compatible with numerous functional groups, and aliphatic amines are inert due to protonation. A convenient method for N-arylethylation of aromatic amines and heterocycles under
作者:Hang Luo、Guohua Wang、Yunhui Feng、Wanyao Zheng、Lingya Kong、Yunpeng Ma、Shigeki Matsunaga、Luqing Lin
DOI:10.1002/chem.202202385
日期:2023.1.2
Exogenous photocatalyst-free, single nickel-catalyzed carbon–heteroatomcoupling under visible-light irradiation is reported. Over 15 classes of nucleophile can efficiently couple with aryl/alkene halides to afford valuable heteroatomic arenes/alkenes. The unprecedentedly broad substrate scope and late-stage modification of valuable molecules fully demonstrate the benefits of the method.