There is provided a process for producing 2-bromocyclopentanone which process is characterized in that cyclopentanone is reacted with bromine in a biphasic mixture of water and an organic solvent.
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Page column 4
(2008/06/13)
Oxidation Using Quaternary Ammonium Polyhalides. III. An Effective Oxidation of Alcohols and Ethers by the Use of Benzyltrimethylammonium Tribromide
The reaction of primary alcohols or simple ethers and α,ω-diols or cyclic ethers with a stoichiometric amount of benzyltrimethylammonium tribromide (BTMA) Br3) in carbon tetrachloride in the presence of Na2HPO4 aq or in acetic acid in the presence of CH3CO2Na aq at 60-70 deg C gave dimeric esters and lactones respectively in good yields.The reaction of secondary alcohols with 1 equiv of BTMA Br3 in the presence of a buffer at 60 deg C gave ketones.
Anhydrous Iron(III) Chloride Dispersed on Silica Gel; III. A Convenient and Mild Reagent for Deacetalization in Dry Medium
Acetals of various structures are conveniently cleaved under mild conditions by anhydrous iron(III) chloride dispersed on silica gel in the absence of any solvent.
Fadel, Antoine,Yefsah, Ramdane,Salauen, Jacques
p. 37 - 40
(2007/10/02)
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