[(PPh<sub>3</sub>)<sub>2</sub>NiCl<sub>2</sub>]-Catalyzed C–N Bond Formation Reaction via Borrowing Hydrogen Strategy: Access to Diverse Secondary Amines and Quinolines
作者:S. N. R. Donthireddy、Vipin K. Pandey、Arnab Rit
DOI:10.1021/acs.joc.1c00510
日期:2021.5.7
mono-N-alkylation of (hetero)aromatic amines, employing alcohols to deliver diverse secondary amines, including the drug intermediates chloropyramine (5b) and mepyramine (5c), in excellent yields (up to 97%) via the borrowing hydrogen strategy. This method shows a superior activity (TON up to 10000) with a broad substrate scope at a low catalyst loading of 1 mol % and a short reaction time. Further, this strategy
发现可商购的[(PPh 3)2 NiCl 2 ]是一种有效的催化剂,用于(杂)芳族胺的单N-烷基化,它利用醇来传递各种仲胺,包括药物中间体氯吡胺(5b)和甲吡胺(5c),通过借用氢的策略,收率极高(高达97%)。该方法在1 mol%的低催化剂负载量和较短的反应时间下,具有广泛的底物范围,具有优异的活性(TON高达10000)。此外,该策略还成功地沿无受体脱氢途径获得了各种喹啉衍生物。