Wacker-Type Oxidation of Internal Alkenes using Pd(Quinox) and TBHP
摘要:
The Pd-catalyzed TBHP-mediated Wacker-type oxidation of internal alkenes is reported. The reaction uses 2(4,5-dihydro-2-oxazolyl)quinoline (Quinox) as ligand and TBHP(aq) as oxidant to deliver single ketone constitutional isomer products in a predictable fashion from electronically biased olefins. This methodology is showcased through its application on an advanced intermediate in the total synthesis of the antimalarial drug artemisinin.
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, internalolefins 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。
Synthesis of ?-acyloxy ketones
作者:A. A. Kirchanov、A. S. Zanina、I. L. Kotlyarevskii
DOI:10.1007/bf00952226
日期:1981.8
KIRCHANOV A. A.; ZANINA A. S.; KOTLYAREVSKIJ I. L.; SHVARTS E. M., IZV. AN CCCP, CEP. XIM., 1981, HO 4, 909-911
作者:KIRCHANOV A. A.、 ZANINA A. S.、 KOTLYAREVSKIJ I. L.、 SHVARTS E. M.
DOI:——
日期:——
KIRCHANOV A. A.; ZANINA A. S.; KOTLYAREVSKIJ I. L., IZV. AN CCCP. CEP. XIM., 1981, HO 8, 1914-1915
作者:KIRCHANOV A. A.、 ZANINA A. S.、 KOTLYAREVSKIJ I. L.