A Ba/Pd cooperative catalysis system was developed to enable the dehydrative cross-coupling of allylic alcohols with P-ylides to occur directly and promote a subsequent Wittig reaction in one pot. A variety of multisubstituted 1,4-dienes were isolated in good to excellent yields with broad P-ylides (stabilized by both ester and ketone carbonyl groups) and aldehyde (aliphatic and aromatic) substrates
开发了Ba / Pd协同催化系统,以使烯丙基醇与P-烷基的脱
水交叉偶联直接发生,并促进一个罐中随后的Wittig反应。分离出多种多取代的1,4-二烯,具有良好的选择性,并具有宽E选择性的宽P-内酯(通过酯和酮羰基均稳定)和醛(脂族和芳族)底物。