Ethyl α-Nitrocinnamates in the Synthesis of Highly Functionalized Isoxazoles
作者:Kuang-Po Chen、Yu-Jyun Chen、Che-Ping Chuang
DOI:10.1002/ejoc.201000401
日期:2010.9
An effective method for the synthesis of highlyfunctionalizedisoxazoles from readily available starting ethylα-nitrocinnamates has been developed. Ethylα-nitrocinnamates react smoothly with α-nitro carbonyl compounds to produce isoxazoles in good yields. Michael addition of pyridinium ylides to ethylα-nitrocinnamates can also produce these isoxazoles effectively. These pyridinium salts can be