A Convenient Horner-Emmons Approach to the Synthesis of Substituted Ethyl 1,3-Butadiene-2-carboxylates, and Related Compounds
作者:Tomasz Janecki、Ryszard Bodalski
DOI:10.1055/s-1989-27301
日期:——
The Horner-Emmons reaction of the allylphosphonates 3 with aldehydes gives substituted 1,3-butadiene-2-carboxylates 12 in satisfactory yields. By suitable modification of reactants a variety of 3-alkenyl-2(5H)furanones 13 and 3-alkenylcoumarins 14 are prepared with high geometric selectivity.
烯丙基膦酸酯3与醛的霍纳-埃蒙斯反应以令人满意的收率得到取代的1,3-丁二烯-2-羧酸酯12。通过对反应物进行适当的改性,可以以高几何选择性制备多种3-烯基-2(5H)呋喃酮13和3-烯基香豆素14。