Regioselective Chlorination and Suzuki-Miyaura Cross-Coupling of 4-Alkoxycoumarins, 4-Alkoxy-2-pyrones, and Related Heterocycles
作者:Aisling M. Prendergast、Gerard P. McGlacken
DOI:10.1002/ejoc.201700837
日期:2017.9.1
The chlorination of biologically important 4-alkoxycoumarins was achieved by using trichloroisocyanuric acid, a favorable alternative to N-chlorosuccinimide. The Suzuki–Miyaura cross-coupling of chlorinated coumarins with various boronic acids afforded the products in up to 99 % yield. This protocol was successfully applied to related 2-pyrone, 2-pyridone, and 2-quinolone derivatives.
具有生物重要性的4-烷氧基香豆素的氯化反应是通过使用三氯异氰尿酸(一种替代N-氯琥珀酰亚胺的方法)实现的。Suzuki-Miyaura将氯代香豆素与各种硼酸的交叉偶联提供了高达99%的收率的产品。该协议已成功应用于相关的2-pyrone,2-pyridone和2-quinolone衍生物。