Hypervalent Iodine as a Terminal Oxidant in Wacker-Type Oxidation of Terminal Olefins to Methyl Ketones
作者:Dipali A. Chaudhari、Rodney A. Fernandes
DOI:10.1021/acs.joc.6b00137
日期:2016.3.4
the Wacker process for C═O bond formation in terminal olefins can be initiated by a combination of the Pd(II) and hypervalentiodinereagent, Dess–Martin periodinane to generate methyl ketones. This operationally simple and scalable method offers Markovnikov selectivity, has good functional group compatibility, and is mild and high yielding.
Synthesis of methyl ketones from terminal olefins using PdCl2/CrO3 system mimicking the Wacker process
作者:Rodney A. Fernandes、Venkati Bethi
DOI:10.1016/j.tet.2014.05.022
日期:2014.8
An efficient synthesis of methyl ketones from terminalolefinsusing PdCl2/CrO3 system mimicking the Wacker process is developed. The method shows good functional groups compatibility, no aldehyde by-products and is operationally simple. CrO3 is the sole oxidant and replaces both Cu-salts and molecularoxygen, traditionally used in this process. The method holds potential for future applications in
Preparation of lactones via tricarbonyliron–lactone complexes
作者:Gary D. Annis、Steven V. Ley、Christopher R. Self、Ramamoorthy Sivaramakrishnan
DOI:10.1039/p19810000270
日期:——
A number of tricarbonyliron–lactonecomplexes have been prepared from vinyl oxirans by treatment with pentacarbonyliron. In certain cases two η3-allyl complexes were isolated from a single vinyl oxiran. Oxidation of the complexes by cerium(IV) ammonium nitrate in acetonitrile leads predominantly to β-lactones. The stereochemical integrity of the initial complexes is reflected in the formation of the
Solvent-free transesterification in a ball-mill over alumina surface
作者:Tanmay Chatterjee、Debasree Saha、Brindaban C. Ranu
DOI:10.1016/j.tetlet.2012.05.127
日期:2012.8
An efficient procedure for transesterification has been developed in a ball-mill in the absence of any solvent, acid/base or metal catalyst. A variety of methyl, ethyl, allyl esters have been transesterified to higher benzyl and other esters in high yields by this procedure. (C) 2012 Elsevier Ltd. All rights reserved.
MURAHASHI, SHUN-ICHI;TANIGUCHI, YUKI;IMADA, YASUSHI;TANIGAWA, YOSHIO, J. ORG. CHEM., 54,(1989) N4, C. 3292-3303