Patent ID: 6573409
Filing Date: 2003-06-03
Classification: C07C,C07K,Y02P

Abstract:
A process for the preparation of 3,3-dimethylbutanal comprising:contacting ethylene and isobutylene with sulfuric acid, thereby forming a sulfuric acid ester of 3,3-dimethylbutanol; hydrolyzing said sulfuric acid ester to form 3,3-dimethylbutanol; and contacting 3,3-dimethylbutanol obtained from the hydrolysis with a dehydrogenation catalyst containing an active phase comprising copper, thereby converting 3,3-dimethylbutanol to 3,3-dimethylbutanal and generating by-product hydrogen, 3,3-dimethylbutanal being produced at a turnover ratio of at least about 5 moles 3,3-dimethylbutanal per mole catalyst active phase prior to any interruption of the reaction for regeneration of the catalyst.