Streamlined Access to Functionalized Chromenes and Quinolines using Domino Reactions of Salicylic Aldehydes and Methyl 4-Chloro-2-butynoate
作者:Davide Bello、Javier Ruiz-Rodríguez、Fernando Albericio、Rosario Ramón、Rodolfo Lavilla
DOI:10.1002/ejoc.201000559
日期:——
Methyl 4-chloro-2-butynoate was used in a modified Morita-Baylis―Hillman reaction with salicylic aldehydes. The chlorine atom in the alkynoate moiety allows its efficient isomerization to the corresponding allene, and remains in the adduct as a reactive site. Further one-pot derivatization leads to a variety of substituted chromenes and quinolines.
4-氯-2-丁酸甲酯用于改进的 Morita-Baylis-Hillman 反应与水杨醛。炔酸酯部分中的氯原子允许其有效异构化为相应的丙二烯,并作为反应位点保留在加合物中。进一步的一锅衍生产生多种取代的色烯和喹啉。