Silica Gel‐mediated Synthesis of β‐Enamino Esters and its Application for the Synthesis of Indeno 4‐Hydroxypyridin‐2(1H)‐Ones
作者:Soong‐Hyun Kim、Seri Bae、Eun Bi Ko、Ga Young Park、Eunhye Lee、Hee Jong Hwang、Chun Young Im、Minsoo Song
DOI:10.1002/bkcs.11676
日期:2019.3
The full scope of SiO2‐based condensation of aliphatic or aromatic amines and β‐keto esters to give β‐enamino esters was examined. Functionalized linear β‐enamino esters were easily obtained from SiO2‐based condensation of β‐keto esters and amines only after simple filtration. It was also demonstrated that cyclic β‐enamino esters with 99% purity can be prepared in a practically large scale (60 g) without