Alkylidenation of ester carbonyl groups by means of a reagent derived from RCHBr2, Zn, TiCl4, and TMEDA. Stereoselective preparation of (Z)-alkenyl ethers
Construction of Heterobimetallic Catalytic Scaffold with a Carbene-Bipyridine Ligand: Gold–Zinc Two-Metal Catalysis for Intermolecular Addition of <i>O</i>-Nucleophiles to Nonactivated Alkynes
A gold(I) complex bearing an imidazo[1,5-a]pyridin-3-ylidene ligand with a 2,2′-bipyridine moiety at the C5 position was prepared as a template for constructing heterobimetallic cooperative catalysts. In situ generated gold–zinc bimetallic systems enabled intermolecular nucleophilic anti-addition of O-nucleophiles such as carboxylic acids and phenols toward nonactivated internal alkynes. DFT calculations
制备了在 C5 位具有 2,2'-联吡啶部分的咪唑并[1,5 - a ]吡啶-3-亚基配体的金 (I) 配合物作为构建异质双金属协同催化剂的模板。原位生成的金-锌双金属体系使O亲核试剂(如羧酸和酚类)向未活化的内部炔烃发生分子间亲核反加成。DFT 计算支持提出的阳离子金原子和锌盐位点分别用于活化炔烃和羧酸的协同作用。
Synthesis of 2-Naphthyl Vinyl Ethers
作者:Thomas Wolff、Volker Reiffenrath
DOI:10.1055/s-1980-29235
日期:——
Alkylidenation of ester carbonyl groups by means of a reagent derived from RCHBr2, Zn, TiCl4, and TMEDA. Stereoselective preparation of (Z)-alkenyl ethers