Scandium-catalysed intermolecular hydroaminoalkylation of olefins with aliphatic tertiary amines
作者:Adi E. Nako、Juzo Oyamada、Masayoshi Nishiura、Zhaomin Hou
DOI:10.1039/c6sc02129h
日期:——
scandium trialkyl complex in combination with a borate compound served as an excellent catalyst for the C–H addition of aliphatic tertiary amines to olefins. This highly regiospecific, 100% atom efficient C–H bond alkylation reaction was applicable to a wide variety of tertiary amines and olefins, including functionalised styrenes and unactivated α-olefins. This work represents the firstexample of rare-earth
The highly linear-selective hydroaminomethylation of styrenes is very challenging. Herein, an efficient, highly chemoselective, and linear-selective hydroaminomethylation (l/b up to >99:1) of styrenes using Rh(nbd)2SbF6 with a pyrrole-based 3,3′,5,5′-substituted tetraphosphorus ligand is documented. This is in sharp contrast to other available processes leading to branched amines and provides a novel
FIVE-AND-SIX-MEMBERED HETEROCYCLIC COMPOUND, AND PREPARATION METHOD, PHARMACEUTICAL COMPOSITION AND USE THEREOF
申请人:Guangzhou Maxinovel Pharmaceuticals Co.
公开号:EP2947084B1
公开(公告)日:2020-09-23
One-Pot Multicomponent Synthesis of Allyl and Alkylamines Using a Catalytic System Composed of Ruthenium Nanoparticles on Copper <i>N</i>-Heterocyclic Carbene-Modified Silica
作者:Deepti Kalsi、Savarithai J. Louis Anandaraj、Manisha Durai、Claudia Weidenthaler、Meike Emondts、Steven P. Nolan、Alexis Bordet、Walter Leitner
DOI:10.1021/acscatal.2c04044
日期:2022.12.16
integrated one-pot synthesis of valuable allylamines and alkylamines from amines, formaldehyde, and terminal alkynes is achieved using a single catalyst material. This multifunctional catalytic system is composed of a silica support on which are jointly assembled ruthenium nanoparticles and covalently functionalized copper N-heterocyclic carbene (NHC) complexes, introducing a new generation of nanoparticles
使用单一催化剂材料实现了从胺、甲醛和末端炔烃中一锅法合成有价值的烯丙胺和烷基胺。这种多功能催化系统由二氧化硅载体组成,在其上共同组装了钌纳米粒子和共价功能化的铜N-杂环卡宾 (NHC) 配合物,引入了新一代固定在分子修饰表面上的纳米粒子。通过多种技术研究了所得 Ru@SiO 2 -[Cu-NHC] 材料的结构、结构、形态和电子特性,包括 N 2吸附、固态核磁共振、电子显微镜和 X 射线光电子能谱. Ru@SiO 2-[Cu-NHC] 被发现对一系列烯丙胺和烷基胺的一锅法合成具有活性和选择性,这些产品在精细化工和制药工业中非常重要。详细研究表明,固定化分子 Cu(I)–NHC 络合物负责胺、甲醛和末端炔烃的原子高效 A 3偶联,而所得炔丙基胺的选择性氢化由 Ru(0) 纳米粒子催化. 在单个载体上结合分子和纳米粒子位点的设计策略和制备方法非常灵活,为开发能够在一锅中进行复杂反应序列的多功能催化系统开辟了道路。