Design of an Indolylphosphine Ligand for Reductive Elimination-Demanding Monoarylation of Acetone Using Aryl Chlorides
作者:Wai Chung Fu、Chau Ming So、Wing Kin Chow、On Ying Yuen、Fuk Yee Kwong
DOI:10.1021/acs.orglett.5b02344
日期:2015.9.18
elimination-demanding Pd-catalyzed mono-α-arylation of acetone is demonstrated and reported. The catalyst is tolerant of previously proven challenging electron-deficient aryl chlorides and provides excellent product yields with down to 0.1 mol % Pd. Preliminary investigations suggest that the rate-limiting step for the proposed system is the oxidative addition of aryl chlorides, in which it contradicts
证明并报道了膦配体的合理设计,该膦配体用于还原性消除要求的Pd催化的丙酮单α-芳基化反应。该催化剂可耐受先前证明的具有挑战性的缺乏电子的芳基氯化物,并能以低至0.1 mol%的Pd提供出色的产品收率。初步研究表明,所提出系统的限速步骤是氧化加成芳基氯,在该反应中,它与先前有关丙酮与芳基卤化物的α-芳基化的发现相矛盾。