Regioselective oxidation of internal olefins bearing neighboring oxygen functions by means of palladium catalysts. Preparation of β-alkoxy or acetoxy ketones from allyl and homoallyl ethers or esters
作者:Jiro Tsuji、Hideo Nagashima、Kimihiko Hori
DOI:10.1016/s0040-4039(00)87430-4
日期:1982.1
of β- and γ-alkoxy (acetoxy) ketones, which are important precursors of vinyl ketones and 1,4-diketones, respectively, is presented. With PdCl2/CuCl/O2 or PdCl2/p-benzoquinone catalyst system, internal olefins bearing allylic alkoxy or acetoxy group underwent regioselective oxidation to form the corresponding β-alkoxy or β-acetoxy ketones. Similarly, γ-acetoxy ketones were obtained from homoallyl acetates
提出了一种新的β-和γ-烷氧基(乙酰氧基)酮的制备方法,它们分别是乙烯基酮和1,4-二酮的重要前体。在PdCl 2 / CuCl / O 2或PdCl 2 /对苯醌催化剂体系中,带有烯丙基烷氧基或乙酰氧基的内烯烃进行区域选择性氧化,形成相应的β-烷氧基或β-乙酰氧基酮。类似地,从具有高区域选择性的具有内烯烃的均烯丙基乙酸酯获得γ-乙酰氧基酮。