Regioselective Crossed Aldol Reactions under Mild Conditions via Synergistic Gold-Iron Catalysis
作者:Teng Yuan、Xiaohan Ye、Pengyi Zhao、Shun Teng、Yaping Yi、Jin Wang、Chuan Shan、Lukasz Wojtas、Jonathan Jean、Hao Chen、Xiaodong Shi
DOI:10.1016/j.chempr.2020.03.014
日期:2020.6
was identified as an essential co-catalyst in preventing vinyl Au protodeauration and facilitating nucleophilic additions. Effective C–C bond formation was achieved under mild conditions (room temperature) with excellent regioselectivity and high efficiency (1% [Au], up to 95% yields). The intramolecular reaction was also achieved, giving successful macrocyclization (16–31 ring sizes) with excellent
开发了一种协同金铁 (Au-Fe) 催化系统,用于顺序炔烃水合和乙烯基 Au 加成至醛或酮。 Fe(acac) 3被认为是防止乙烯基 Au 原型脱气和促进亲核加成的重要助催化剂。在温和条件(室温)下实现了有效的 C-C 键形成,具有出色的区域选择性和高效率(1% [Au],产率高达 95%)。还实现了分子内反应,成功进行了大环化(16-31 个环尺寸),且收率优异(高达 90%,克级),无需进一步稀释 (0.2 M),这突显了这种新的交叉羟醛策略在挑战中的巨大潜力。目标分子合成。