作者:Pashikanti Gouthami、Lahu N. Chavan、Rambabu Chegondi、Srivari Chandrasekhar
DOI:10.1021/acs.joc.8b00360
日期:2018.3.16
The highly efficient and expedient route for the syntheses of 2-aroyl benzofurans has been developed via the cascade [2+2] followed by a [4+1] annulation on arynes. The overall transformation proceeded through the formation of ortho-quinone methide by the insertion of transient aryne into N,N-dimethylformamide and subsequent trapping with sulfur ylide. Moreover, this transformation has a broad range
通过级联[2 + 2],然后在芳烃上进行[4 + 1]环化,已经开发出了2-芳酰基苯并呋喃的高效合成途径。通过将瞬时的芳烃插入N,N-二甲基甲酰胺中,然后用硫内鎓盐捕集,通过形成邻醌甲基化物来进行整体转化。而且,该转变具有高官能团耐受性的广泛的基板范围。该新反应已成功用于有效的CYP19芳香酶抑制剂的合成和对生物活性复合物雌酮的后期功能化。