Gerald S Phillips

US Patent:

52547019, Oct 19, 1993

Filed:

May 20, 1991

Appl. No.:

7/702483

Inventors:

Stephen N. Falling - Kingsport TN
Gerald W. Phillips - Longview TX

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

C07D30720
C07C 4559

US Classification:

549475

Abstract:

Disclosed is a process for the production of an equilibrium mixture of 2-hydroxytetrahydrofuran and 4-hydroxybutanal by a two-step process comprising (1) heating 2,5-dihydrofuran in the presence of a catalyst system comprising a phosphine, ruthenium or rhodium to convert the 2,5-dihydrofuran to 2,3-dihydrofuran; and (2) contacting 2,3-dihydrofuran with water in the presence of an acidic catalyst to convert the 2,3-dihydrofuran to a mixture of 2-hydroxytetrahydrofuran and 4-hydroxybutanal. Also disclosed is a process for the continuous production of an aqueous solution of 2-hydroxytetrahydrofuran and 4-hydroxybutanal. The mixture of 2-hydroxytetra-hydrofuran and 4-hydroxybutanal may be catalytically hydrogenated to produce 1,4-butanediol.

US Patent:

47421789, May 3, 1988

Filed:

Nov 10, 1986

Appl. No.:

6/929120

Inventors:

Gregory O. Nelson - Kingsport TN
Thomas J. Devon - Longview TX
Thomas A. Puckette - Longview TX
Jerome L. Stavinoha - Longview TX
Gerald W. Phillips - Longview TX
Jeffrey J. Vanderbilt - Longview TX

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

C07C 4550

US Classification:

568454

Abstract:

A hydroformylation process for preparing dialdehydes from dienes by contacting a C. sub. 6 -C. sub. 10 diene in a reaction zone at a temperature of from about 20. degree. C. to about 250. degree. C. and a pressure of from about 15 psig to about 800 psig with hydrogen, carbon monoxide, and a catalyst containing rhodium, the ligand having the formula ##STR1## wherein: n is 1-4; each R is independently selected from hydrogen, alkyl, alkoxy, aryloxy, aryl, aralkyl, alkaryl, alkoxyalkyl, cycloaliphatic, halogen, alkanoyl, alkanoyloxy, alkoxycarbonyl, carboxyl or cyano; each R. sub. 1 and R. sub. 2 is independently selected from alkyl, aryl, aralkyl, alkaryl or cycloaliphatic; each R. sub. 3 and R. sub. 4 is independently selected from hydrogen and the R. sub. 1 substituents; and each Y is independently selected from the elements N, P, As, Sb and Bi.