Lawrence H Shepherd

US Patent:

39431746, Mar 9, 1976

Filed:

Mar 4, 1974

Appl. No.:

5/448039

Inventors:

Robert J. Ellis - Baton Rouge LA
Lawrence H. Shepherd - Baton Rouge LA
Richmond M. Starrett - Baton Rouge LA

Assignee:

Ethyl Corporation - Richmond VA

International Classification:

C07C13912

US Classification:

260513B

Abstract:

A process is disclosed for producing alkyl sulfonates by the addition of bisulfite ions to olefinic double bonds. In the process, ammonium, or alkali metal bisulfite and olefins having from about 8 to about 30 carbon atoms per molecule are reacted in the presence of lower alkanol having from 2 to about 4 carbon atoms, water and a reaction initiating agent.

US Patent:

42128129, Jul 15, 1980

Filed:

Feb 26, 1979

Appl. No.:

6/015367

Inventors:

Lawrence H. Shepherd - Baton Rouge LA

Assignee:

Ethyl Corporation - Richmond VA

International Classification:

C07D30904

US Classification:

2603451

Abstract:

By treating a primary or secondary alkenol having an olefinic bond in the sixth position relative to the carbon atom carrying the hydroxyl group and at least one methyl group in the fifth position relative to said carbon atom with a strong acid (e. g. , 85 percent phosphoric acid), 2,2-dialkyltetrahydropyrans are produced via a cyclization reaction. The products have desirable fragrance characteristics.

US Patent:

40026914, Jan 11, 1977

Filed:

Aug 22, 1975

Appl. No.:

5/606762

Inventors:

Lawrence H. Shepherd - Baton Rouge LA

Assignee:

Ethyl Corporation - Richmond VA

International Classification:

C07C 3500

US Classification:

260617F

Abstract:

Tricyclo[4. 2. 1. sup. 2,5 ]non-7-enes wherein the 3 position is substituted by a methylol group may be made by reacting a bicyclo[2. 2. 1]hepta-2,5-diene with a 2-alkenyl magnesium compound in a 1:1 ratio to yield a molecular addition product which is then oxidized and hydrolyzed to give the 3-methylol product. These substituted tricyclo[4. 2. 1. sup. 2,5 ]non-7-enes are useful, inter alia, as intermediates for the manufacture of lubricating oil additives and various other useful products and they may be used for gas scrubbing applications and the like.

US Patent:

45885346, May 13, 1986

Filed:

Oct 29, 1980

Appl. No.:

6/202008

Inventors:

Lawrence H. Shepherd - Baton Rouge LA
William J. DeWitt - Baton Rouge LA
Gerhard O. Kuehnhanss - Baton Rouge LA

Assignee:

Ethyl Corporation - Richmond VA

International Classification:

C07C14302
C09K 300

US Classification:

260513R

Abstract:

An ether sulfinate/sulfonate or disulfonate having the following formula: ##STR1## wherein: R is a hydrocarbon group having from about 6 to about 24 carbon atoms, Y is SO. sub. 2 M or SO. sub. 3 M, Z is hydrogen or a methyl group, and M is an alkali metal, alkylammonium or ammonium cation and mixtures of each of said sulfinate/sulfonate and said disulfonate with an ether monosulfonate having the following formula: ROCH. sub. 2 CH(Z)CH. sub. 2 SO. sub. 3 M wherein: R is a hydrocarbon group having from about 6 to about 24 carbon atoms, Z is hydrogen or a methyl group, and M is an alkali metal, alkylammonium or ammonium cation.

US Patent:

49259849, May 15, 1990

Filed:

May 9, 1988

Appl. No.:

7/191349

Inventors:

John Y. Lee - Baton Rouge LA
Lawrence H. Shepherd - Baton Rouge LA

Assignee:

Ethyl Corporation - Richmond VA

International Classification:

C07C 8524

US Classification:

564412

Abstract:

A process of selectively preparing p-bromo-o-alkylanilines (e. g. 4-bromo-2-methylaniline) by reacting o-alkylanilines (e. g. , 2-methylaniline) with unadsorbed bromine in a solvent selected from the group consisting of an inert di- tri- or tetrahaloaliphatic hydrocarbon (e. g. , dichloromethane and dibromomethane), an alkyl nitrile (e. g. , acetonitrile) and mixtures thereof.

US Patent:

53290542, Jul 12, 1994

Filed:

Jul 19, 1993

Appl. No.:

8/093166

Inventors:

Kevin J. Theriot - Baton Rouge LA
Niomi L. Krzystowczyk - Baton Rouge LA
Edward A. Burt - Baton Rouge LA
Lawrence H. Shepherd - Baton Rouge LA

Assignee:

Albemarle Corporation - Richmond VA

International Classification:

C07C 1724
C07C 1733
C07C 2513
C07C 2502

US Classification:

570142

Abstract:

Activated carboxylic acids and esters such as pentafluorobenzoic acid are rapidly decarboxylated in high yields by reacting the acid or ester with an alkanolamine reagent which catalyzes the reaction.

US Patent:

42409853, Dec 23, 1980

Filed:

Feb 26, 1979

Appl. No.:

6/015369

Inventors:

Lawrence H. Shepherd - Baton Rouge LA

Assignee:

Ethyl Corporation - Richmond VA

International Classification:

C07C 4702

US Classification:

568483

Abstract:

Aldehydes are produced by cleaving 2,2-dialkyltetrahydropyrans bearing two hydrogen atoms in the sixth position with a strong acid. The 2,2-dialkyltetrahydropyran can be formed in situ by contacting the strong acid with a primary 6-alken-1-ol having at least one methyl group in the fifth position so that cyclization occurs.

US Patent:

56485832, Jul 15, 1997

Filed:

Apr 27, 1995

Appl. No.:

8/429448

Inventors:

John Y. Lee - Baton Rouge LA
Meng-Sheng Ao - Baton Rouge LA
Stephen E. Belmont - Baton Rouge LA
Lawrence H. Shepherd - Baton Rouge LA

Assignee:

Albemarle Corporation - Richmond VA

International Classification:

C07C 525
C07C 523
C07C 500

US Classification:

585664

Abstract:

Exo-isomers of polyalkylcyclopentadienes are converted to endo-isomers by contacting the exo-isomers with an acid such as aqueous HCl.