Palladium‐Catalyzed Inverse and Normal Dehydrogenative Aza‐Morita–Baylis–Hillman Reactions with γ,δ‐Unsaturated Compounds
作者:Peng Chen、Shun‐Zhong Tan、Lei Zhu、Qin Ouyang、Zhi‐Jun Jia、Wei Du、Ying‐Chun Chen
DOI:10.1002/anie.202301519
日期:2023.6.5
A Pd0 complex can mediate dehydrogenative formation of 2,4-diene systems from γ,δ-unsaturated carbonyls in the presence of 2,6-DMBQ (2,6-dimethyl-1,4-benzoquinone), which undergo vinylogous addition to imines via auto-tandem Pd0-π-Lewis base catalysis. Both chemically inverse δ-regioselective aza-Morita–Baylis–Hillman adducts and α-regioselective normal ones are obtained switchably and stereoselectively
Pd 0配合物可以在 2,6-DMBQ(2,6-二甲基-1,4-苯醌)存在的情况下,从 γ,δ-不饱和羰基介导 2,4-二烯系统的脱氢形成,其经历插烯加成到亚胺通过自动串联 Pd 0 -π-Lewis 碱催化。通过调节催化条件,可切换和立体选择性地获得化学反相 δ-区域选择性 aza-Morita-Baylis-Hillman 加合物和 α-区域选择性正常加合物。