867-54-9Relevant academic research and scientific papers
PROCESS FOR PREPARIING 1,3-DIBROMOACETONE, 1-3-DICHLOROACETONE AND EPICHLOROHYDRIN
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Page/Page column 10-11, (2008/06/13)
A process for preparing 1,3-dibromoacetone, 1-3-dichloroacetone and epichlorohydrin which comprises: (a) reacting acetone with 2 moles of bromine to make a mixture of brominated acetone derivatives and byproduct hydrogen bromide; (b) equilibrating the mixture of brominated acetone derivatives and hydrogen bromide to produce 1,3-dibromoacetone as the major product; (c) crystallizing the 1,3-dibromoacetone; and (d) isolating the 1,3-dibromoacetone. The process may further include the steps of (e) reacting the 1,3-dibromoacetone with a chloride source to produce 1,3-dichloroacetone; (f) hydrogenating the isolated 1,3-dichloroacetone to produce 1,3-dichlorohydrin; and (g) cyclizing the 1,3-dichlorohydrin with a base to produce epichlorohydrin.
Oxybromination Catalysed by the Heteropolyanion Compound H5PMo10V2O40 in an Organic Medium: Selective para-Bromination of Phenol
Neumann, Ronny,Assael, Igal
, p. 1285 - 1287 (2007/10/02)
Selective bromination of phenol and its derivatives and the bromination of ketones and alkenes have been achieved by oxybromination at ambient conditions catalysed by the mixed addenda heteropolyanion compound H5PMo10V2O40, which is dissolved in a nonpolar chlorohydrocarbon solvent by complexation with tetraglyme.
Chlorination of Aliphatic Ketones in Methanol
Gallucci, R. R.,Going, R.
, p. 2532 - 2538 (2007/10/02)
The chlorination of aliphatic ketones in methanol has been examined.The product distributions in methanol differ substantially from those obtained by chlorination in carbon tetrachloride.The reaction in methanol favors addition of chlorine to the least substituted carbon α to the carbonyl group.The effect is especially pronounced if an α carbon bearing two substituents is present.The distribution of products is determined by the relative stability of the enol ethers formed from the ketone under the reaction conditions.
