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Title:
PROCESS FOR THE PREPARATION OF 3,3-DIMETHYLBUTANAL
Document Type and Number:
WIPO Patent Application WO2001002332
Kind Code:
A9
Abstract:
3,3-Dimethylbutanal is prepared from 3,3-dimethylbutanol. Intermediate 3,3-dimethylbutanol is obtained by reacting ethylene, isopropylene and a mineral acid to produce a 3,3-dimethylbutyl ester which is hydrolyzed to the alcohol. The hydrolysis step is effectively carried out by reactive distillation. Alternatively, 3,3-dimethylbutanal is prepared from 3,3-dimethylbutanol obtained by reduction of the corresponding carboxylic acid or 1,2-epoxy-3,3-dimethylbutane, or by hydrolysis of 1-halo-3,3-dimethylbutane. Fixed bed gas phase and stirred tank liquid phase processes are provided for converting 3,3-dimethylbutanol to 3,3-dimethylbutanal by catalytic dehydrogenation.

Inventors:
EBNER JERRY R
GUO ZHI
HERSHMAN ARNOLD
KLEIN LORAINE M
MCGHEE WILLIAM D
PASTER MARK D
PRAKASH INDRA
Application Number:
US0017946W
Publication Date:
August 01, 2002
Filing Date:
June 29, 2000
Export Citation:
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Assignee:
THE NUTRASWEET COMPANY
International Classes:
C07C45/29; C07B61/00; C07C17/275; C07C29/06; C07C29/09; C07C29/12; C07C29/124; C07C29/132; C07C29/147; C07C31/125; C07C45/00; C07C45/38; C07C47/02; C07C229/24; C07C303/24; C07K1/113; C07K5/072; C07K5/075; C07C305/08; (IPC1-7): C07C47/02; C07C45/00; C07C45/38; C07C303/24; C07C303/26; C07C29/12; C07C229/24; C07C29/147; C07C29/124; C07C29/09; C07C29/36; C07C29/132
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