烯丙基化合物 (I)、R1–O–R(R=烯丙基,R1=Ph、Me、PhCH2、MeCO)与活性氢化合物如酚、醇、羧酸、伯胺和仲胺和活性氢反应亚甲基化合物,在钯催化剂的存在下,通过 I 的烯丙基与键合活性氢的原子的分子间交换,得到活性氢化合物的烯丙基衍生物。烯丙基和取代的烯丙基醚比相应的羧酸盐更具反应性。在甲基和苄基醚的反应中,需要加入苯酚才能以较好的收率得到交换产物。双(三苯基膦)氯化钯加苯酚钠,乙酸钯加三苯基膦,
Copper-catalyzed regioselective allylic oxidation of olefins via C–H activation
作者:Nengbo Zhu、Bo Qian、Haigen Xiong、Hongli Bao
DOI:10.1016/j.tetlet.2017.09.047
日期:2017.10
A regioselective oxidation of allylic C–H bond to C–O bond catalyzed by copper (I) was developed with diacyl peroxides as oxidants. The oxidation of allylic C–H bond was accomplished with good yield and regioselectivity under mild reaction conditions. This method has a broad substrate scope including cyclic olefins, terminal and internal acyclic olefins and allyl benzene compounds. The reaction proceeds