A Base‐Mediated Approach Towards Dihydrofuro[2,3‐
<i>b</i>
]Benzofurans from 2‐Nitrobenzofurans and 1,3‐Dicarbonyls
作者:Gurdeep Singh、Rajat Pandey、Adarsh S. Kurup、Ramasamy Vijaya Anand
DOI:10.1002/asia.202100184
日期:2021.5.17
A straight‐forward approach for the synthesis of a dihydrofuro[2,3‐b]benzofuran derivatives has been achieved through a base‐mediated Michael addition of 1,3‐dicarbonyls to 2‐nitrobenzofurans followed by intramolecular cyclization. A variety of 1,3‐dicarbonyls, including cyclic as well as trifluoromethylated ones, have been subjected to react with 2‐nitrobenzofurans under optimal conditions, and the
通过碱介导的1,3-二羰基向2-硝基苯并呋喃的迈克尔加成反应,然后分子内环化,已经实现了合成二氢呋喃[2,3- b ]苯并呋喃衍生物的简单方法。各种1,3-二羰基化合物,包括环状的以及三氟甲基化的,都已在最佳条件下与2-硝基苯并呋喃进行了反应,相应的二氢呋喃[2,3- b ]苯并呋喃的回收率中等至优异。 。