Synthesis of Substituted Chromenes through the DABCO-Catalyzed Reaction of But-3-yn-2-one and Methyl Propiolate with SalicylN-Tosylimines (DABCO=1,4-diazabicyclo[2.2.2]octane)
作者:Yong-Ling Shi、Min Shi
DOI:10.1002/chem.200501291
日期:2006.4.12
The DABCO-catalyzed (DABCO = 1,4-diazabicyclo[2.2.2]octane) reaction of but-3-yn-2-one and methylpropiolate with salicyl N-tosylimines yields highly functionalized chromenes and has been thoroughly investigated; the rational mechanism for the reaction has been demonstrated on the basis of 1H NMR spectroscopic investigation.