作者:Leonardo Di Nunno、Antonio Scilimati、Paola Vitale
DOI:10.1016/j.tet.2005.01.049
日期:2005.3
Alkyllithiums react with 3-phenylisoxazole giving C5–H abstraction followed either mainly by ring fragmentation to benzonitrile and ethynolate ion (in the case of t-BuLi) or (less hindered alkyllithiums: n-BuLi, EtLi, MeLi) also by formation of alkylated enaminones. Appreciable amounts of 2-alkyl-4,6-diphenylpyrimidines have also been isolated for certain alkyllithiums (EtLi and MeLi). This is at variance