Bulky
<i>N</i>
‐Heterocyclic‐Carbene‐Coordinated Palladium Catalysts for 1,2‐Addition of Arylboron Compounds to Carbonyl Compounds
作者:Yuta Okuda、Masahiro Nagaoka、Tetsuya Yamamoto
DOI:10.1002/cctc.202001464
日期:2020.12.16
primary, secondary, and tertiary alcohols by the 1,2‐addition of arylboronic acids or boronates to carbonyl compounds, including unactivated ketones, using novel bulky yet flexible N‐heterocyclic carbene (NHC)‐coordinated 2,6‐di(pentan‐3‐yl)aniline (IPent)‐based cyclometallated palladium complexes (CYPs) as catalysts is reported. The PhS‐IPent‐CYP‐catalyzed reactions are efficient at low catalyst loadings
使用新型但又灵活的N杂环卡宾(NHC)配位的2,6-di(据报道以戊烷-3-基)苯胺(IPent)为基的环金属化钯配合物(CYPs)。PhS-IPent-CYP催化的反应在低催化剂负载量(0.02-0.3 mol%Pd)下有效,而1,2-加成的出色催化活性归因于NHC配体的空间体积。这些反应可产生各种功能化的苄醇,这些化合物很难通过经典方案使用高活性有机镁或锂试剂进行合成。