Process for the reductive cleavage of linear and cyclic...

Details Process for the reductive cleavage of linear and cyclic... Process for the reductive cleavage of linear and cyclic...

C - Chemistry, Metallurgy

07

C

C07C 31/24 (2006.01) C07C 29/132 (2006.01) C07C 29/90 (2006.01) C07C 31/04 (2006.01) C07C 31/18 (2006.01)

Patent

CA 2281364

The reductive cleavage of linear and cyclic acetals, especially formals, in an aqueous medium containing a formate takes place by hydrogenation with hydrogen in the presence of a heterogeneous hydrogenation catalyst at a pH value of less than 7 at a temperature of over 200 °C. The catalyst-poisoning effect of the formate is overcome at over 200 to 300 °C, especially from over 200 to 280 °C, so that, in a suspension procedure, the weight ratio of metal having hydrogenating activity to acetal can be much lower than in the prior art, namely less than 0.1.

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