Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1996-03-28
1998-09-01
Robinson, Allen J.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568459, 568464, C07C 4545
Patent
active
058012923
ABSTRACT:
A process for condensing aldehydes where an aldehyde having an a hydrogen and having the formula R.sub.1 CHO, wherein R.sub.1 is selected from alkyl having one to twelve carbon atoms and aralkyl having one to fourteen carbon atoms, is combined with hydrated MgO to form a reaction product comprising an aldol of said aldehyde, the unsaturated aldehyde derived by dehydration of said aldol, or mixtures thereof. In a second embodiment, a first composition selected from aldehydes containing an a hydrogen and having the formula R.sub.1 CHO, wherein R.sub.1 is as defined above, is combined with a second composition selected from aldehydes having the formula R.sub.2 CHO, wherein R.sub.2 is selected from H, alkyl having one to twelve carbon atoms, and aralkyl having one to fourteen carbon atoms, and with hydrated MgO, to form a reaction product mixture comprising an aldol of said aldehyde, the unsaturated aldehyde derived by dehydration of said aldol, or mixtures thereof. The aldol or aldehyde formed may be separated from the reaction product mixture, and recovered or treated as desired, or the reaction product mixture may be further directly treated, such as by hydrogenation, to produce a desired product admixture.
REFERENCES:
patent: 4263181 (1981-04-01), Wagner et al.
patent: 5144089 (1992-09-01), Arena et al.
Tsuji H et al, "Self-Condensation of n-Butyraldehyde over Solid Base Catalysts;" J. Catal.; 1994; vol. 148 (2) ; pp. 759-770.
Zhang G et al, "Aldol Addition of Butyraldehyde over Solid Base Catlaysts"; Bull. Chem. Soc. Japan; 1989; vol. 62 (6); pp. 2070-2072.
Chemical Abstracts, vol. 126, No. 21; Abstract No. 277185d, Ichikawa M et al, 1997.
Kwok Thomas J.
Watkins Windell C.
Badio Barbara
Blake Michael J.
Eastman Chemical Company
Gwinnell Harry J.
Robinson Allen J.
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