作者:Ling-Zhi Lin、Yuan-Yuan Che、Peng-Bo Bai、Chao Feng
DOI:10.1021/acs.orglett.9b02728
日期:2019.9.20
strategically novel Pd-catalyzed nucleophilic addition induced allylic alkylation reaction (NAAA) of allenoates has been successfully accomplished. By judiciously integrating ZnCl2-promoted Michael addition with Pd-catalyzed allylic alkylation, allenoates readily undergo allyl-sunfonylation at the internal double bond, thus providing a straightforward avenue for the rapid assembly of a host of structurally
成功实现了战略上新颖的钯催化的脲基甲酸酯的亲核加成诱导的烯丙基烷基化反应(NAAA)。通过明智地整合ZnCl2促进的Michael加成反应和Pd催化的烯丙基烷基化反应,烯丙酸酯易于在内部双键处进行烯丙基-sunfonylation,从而为许多结构多样的α-烯丙基-β-磺酰基- 3-烯酸酯衍生物。由于Pd / Zn双金属系统之间的协同相互作用,该转化的成功得益于对每个基本步骤的反应动力学的精细控制,从而抑制了直接烯丙基磺酰化或抑制了其中原位生成的酯烯酸酯中间体的过早淬灭。此外,