Copper-Catalyzed γ-Selective and Stereospecific Allylic Cross-Coupling with Secondary Alkylboranes
作者:Yuto Yasuda、Kazunori Nagao、Yoshinori Shido、Seiji Mori、Hirohisa Ohmiya、Masaya Sawamura
DOI:10.1002/chem.201501055
日期:2015.6.26
of the copper‐catalyzed coupling reactions between organoboron compounds and allylic phosphates is expanded significantly by employing triphenylphosphine as a ligand for copper, allowing the use of secondary alkylboron compounds. The reaction proceeds with complete γ‐E‐selectivity and preferential 1,3‐syn stereoselectivity. The reaction of γ‐silicon‐substituted allylic phosphates affords enantioenriched
通过使用三苯基膦作为铜的配体,有机硼化合物与烯丙基磷酸酯之间铜催化的偶联反应的范围大大扩展,从而允许使用仲烷基硼化合物。反应以完全的γ- E-选择性和优先的1,3-顺式立体选择性进行。γ-硅取代的烯丙基磷酸酯的反应可提供对映体富集的α-立体异构烯丙基硅烷。