Organocatalytic Atroposelective Arylation of 2-Naphthylamines as a Practical Approach to Axially Chiral Biaryl Amino Alcohols
作者:Ye-Hui Chen、Liang-Wen Qi、Fang Fang、Bin Tan
DOI:10.1002/anie.201710537
日期:2017.12.18
The phosphoric acid catalyzeddirect arylation of 2-naphthylamines with iminoquinones enables the atroposelective synthesis of axiallychiral biaryl amino alcohols. Many functional groups are tolerated in this reaction, and it is a rare example of 2-naphthylamines acting as nucleophiles in an organocatalytic enantioselective transformation.
Elemental Sulfur-Promoted Aerobic Dehydrogenative Aromatization of Cyclohexanones with Amines
作者:Zhen Wang、Cheng Li、Huawen Huang、Guo-Jun Deng
DOI:10.1021/acs.joc.0c01122
日期:2020.7.17
2-naphthylamines is reported herein. Readily available cyclohexanones and amines (especially alkylamines) are transformed smoothly to target products. Aromatic amines can be achieved from all aliphatic reagents under aerobic metal-free reaction conditions. Control reactions show that the combinational use of elemental sulfur and molecular oxygen is exceptionally essential for this dehydrogenative aromatizaiton
Synthesis of benzo-γ-sultams via the Rh-catalyzed aromatic C–H functionalization of diazosulfonamides
作者:Zhanhui Yang、Jiaxi Xu
DOI:10.1039/c4cc00250d
日期:——
Diazosulfonamides are first introduced and employed to synthesize 1-aryl-benzo-γ-sultams via Rh-catalyzed intramolecular aromatic C–H functionalization.
Cu-ACP-Am-Fe3O4@SiO2: an efficient and recyclable heterogeneous catalyst for the Chan–Lam coupling reaction of boronic acids and amines
作者:Sandip P. Vibhute、Pradeep M. Mhaldar、Dipak S. Gaikwad、Rajendra V. Shejwal、Dattaprasad M. Pore
DOI:10.1007/s00706-019-02529-w
日期:2020.1
AbstractWe have developed an efficient method for Cu-ACP-Am-Fe3O4@SiO2 catalyzed Chan–Lamcoupling of phenylboronic acid with primary amine furnished secondary amines. The catalyst offered virtues like mild reaction conditions, magnetically separable, and reusable and exhibits excellent performance in terms of good product yield and high turnover number. Graphic abstract
摘要我们已经开发出一种有效的方法,用于Cu-ACP-Am-Fe 3 O 4 @SiO 2催化苯基硼酸与伯胺提供的仲胺的Chan-Lam偶联。该催化剂具有温和的反应条件,可磁分离和可重复使用的优点,并在良好的产物收率和高周转率方面表现出优异的性能。 图形摘要
B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>-catalyzed metal-free hydrogenation of naphthylamines
作者:Gen Li、Yongbing Liu、Haifeng Du
DOI:10.1039/c5ob00009b
日期:——
A catalytic metal-free hydrogenation of naphthylamines using B(C6F5)3 as a catalyst was successfully achieved under mild conditions for the first time to furnish a variety of tetrahydronaphthylamines in 88–99% yields.
使用B(C 6 F 5)3作为催化剂的萘胺的无催化金属氢化首次在温和条件下成功实现,以88-99%的产率提供了各种四氢萘胺。