Phase Transfer Reagent Promoted Tandem Ring-Opening and Ring-Closing Reactions of Unique 3-(1-Alkynyl) Chromones
作者:Yang Liu、Shiyu Jin、Liping Huang、Youhong Hu
DOI:10.1021/acs.orglett.5b00721
日期:2015.5.1
promoted tandem ring-opening and ring-closing reaction of 3-(1-alkynyl) chromones has been developed. This process remarkably generates functionalized 3-acyl-2-substituted chromones. Interestingly, when 3-(hepta-1,6-diyn-1-yl)chromone derivatives are applied, a novel tetracyclic chromone scaffold can be obtained by a further intramolecular 4 + 2 cyclization.
已经开发出相转移试剂促进3-(1-炔基)色酮的串联开环和闭环反应。该过程显着产生官能化的3-酰基-2-取代的色酮。有趣的是,当使用3-(庚-1,6-二炔-1-基)色酮衍生物时,可以通过进一步的分子内4 + 2环化获得新型的四环色酮支架。