Lactamization of sp<sup>2</sup>C−H Bonds with CO<sub>2</sub>: Transition-Metal-Free and Redox-Neutral
作者:Zhen Zhang、Li-Li Liao、Si-Shun Yan、Lei Wang、Yun-Qi He、Jian-Heng Ye、Jing Li、Yong-Gang Zhi、Da-Gang Yu
DOI:10.1002/anie.201602095
日期:2016.6.13
The first direct use of carbon dioxide in the lactamization of alkenyl and heteroaryl C−H bonds to synthesize important 2‐quinolinones and polyheterocycles in moderate to excellent yields is reported. Carbon dioxide, a nontoxic, inexpensive, and readily available greenhouse gas, acts as an ideal carbonyl source. Importantly, this transition‐metal‐free and redox‐neutral process is eco‐friendly and desirable
据报道,在烯基和杂芳基CH键的内酰胺化中首次直接使用二氧化碳以中等至极好的收率合成重要的2-喹啉酮和多杂环化合物。二氧化碳是一种无毒,廉价且易于获得的温室气体,是理想的羰基来源。重要的是,这种无过渡金属和氧化还原中性的工艺对生态友好,是制药业的理想之选。此外,这些反应具有广泛的底物范围,良好的官能团耐受性,简便的可扩展性和易于产品衍生化的特点。