Add time:08/28/2019         Source:sciencedirect.com

A stepwise isopropylation reaction of acetone is developed for preparation of methyl isobutyl ketone (MIBK) through acetone condensation and a recoverable Pt/C-catalyzed transfer hydrogenation of mesityl oxide (MO) with isopropanol (IPA). Almost quantitative MO conversion (up to 99.9%) and excellent MIBK selectivity (up to 99.3%) could be achieved by the method. Since IPA can be obtained from propane, a cheap petrochemical product, the by-product acetone (AT) generated in the reduction of MO could be easily recovered and reused in the preparation of MO, and the Pt/C catalyst could be recycled and reused, this H2- and waste-free reaction may be a green and practical method for preparation of the useful fine chemical MIBK.

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