Herman O Senkbeil

40664384, Jan 3, 1978

Apr 12, 1976

5/676035

Howard Johnston - Walnut Creek CA
Herman O. Senkbeil - Midland MI

The Dow Chemical Company - Midland MI

C07D21361
A01N 922

71 94

Novel compounds corresponding to the formula ##STR1## and the organic or inorganic acid addition salts thereof, wherein X represents chloro, bromo or fluoro; R. sup. 1 represents hydrogen, amino, loweralkylamino, arylamino, loweralkylamido or N-(loweralkyl)loweralkylamido; R. sup. 2 represents hydrogen, X, amino or loweralkylamino, with the proviso that one of R. sup. 1 or R. sup. 2 is always amino or loweralkylamino and the other of R. sup. 1 or R. sup. 2 is other than amino or loweralkylamino; R represents butyl, 2-hydroxypropyl, 4-hydroxybutyl, 6-hydroxyhexyl or the radical ##STR2## wherein Z represents amino, lower-alkylamino, phenylamino, hydroxy, loweralkoxy, aryloxy, 2-propenyl, hydroxyloweralkoxy, mercapto, loweralkylthio, loweralkanoyloxy or 2-haloloweralkanoyloxy and R. sup. 3 represents hydrogen or methyl and with the proviso that R is other than butyl when R. sup. 2 is X are prepared.

39474577, Mar 30, 1976

Dec 27, 1974

5/537055

Stanley D. McGregor - Midland MI
Herman O. Senkbeil - Midland MI

The Dow Chemical Company - Midland MI

C07D21302

260290HL

A method for preparing 2,5-dihalo- and 2,5,6-trihalopyridines corresponding to the formula ##SPC1## Wherein each X independently represents chloro, fluoro or bromo and R represents hydrogen, chloro, fluoro or bromo which comprises reacting a halohydrazinopyridine of one of the formulas ##SPC2## With an excess of an aqueous alkali metal hydroxide in the presence of a reaction medium from the group consisting of loweralkanols of 1 to 4 carbon atoms and loweralkylglycols of 2 to 4 carbon atoms.

39766446, Aug 24, 1976

Dec 27, 1974

5/537056

Stanley D. McGregor - Midland MI
Herman O. Senkbeil - Midland MI

The Dow Chemical Company - Midland MI

C07D24146

260250B

A method for preparing 2,5-dihalopyrazines corresponding to the formula ##SPC1## Wherein X represents chloro, bromo or fluoro which comprises, reacting a 3,5,6-trihalo-2-hydrazinopyrazine of the formula ##SPC2## With an aqueous alkali metal hydroxide in the presence of a hydroxylic reaction medium.

41803957, Dec 25, 1979

Apr 11, 1977

5/786702

Howard Johnston - Walnut Creek CA
Herman O. Senkbeil - Midland MI

The Dow Chemical Company - Midland MI

A01N 922
C07D21389

71 94

Compounds are prepared which correspond to the formula ##STR1## wherein X represents chloro, bromo or iodo; R' represents hydrogen or methyl and R represents carboxy (--COOH), the alkyl esters thereof (--COOR. sup. 6 wherein R. sup. 6 represents alkyl of 1 to 8 carbon atoms, (2-alkoxyethoxy)carbonyl (--COOCH. sub. 2 CH. sub. 2 OR. sup. 2) or (1-methyl-2-alkoxyethoxy)carbonyl ##STR2## wherein R. sup. 2 represents alkyl of 1 to 4 carbon atoms) or the metal salts thereof (--COOMe wherein Me represents ammonium or substituted ammonium ion (N. sup. + H(R. sup. 6). sub. 3 wherein each R. sup. 6 independently represents hydrogen, alkyl of 1 to 4 carbon atoms or hydroxyalkyl of 2 to 3 carbon atoms), alkali metal, alkaline earth metal, aluminum or a transition group metal); alkanoyloxymethyl (--CH. sub. 2 OCOR. sup. 2); (2,2-dichloropropionyloxy)methyl (--CH. sub. 2 OCOC(Cl). sub. 2 CH. sub.

43436471, Aug 10, 1982

Jun 9, 1980

6/157755

Joseph Dunbar - Midland MI
Theodore W. Holmsen - Clayton CA
Herman O. Senkbeil - Midland MI

The Dow Chemical Company - Midland MI

A01N 3304
C07C 8730

71 76

Compounds are prepared which correspond to the formula ##STR1## wherein R represents hydrogen, chloro, bromo or trifluoromethyl; n represents an integer of from 1 or 2 with the proviso that when R is trifluoromethyl, n is 1; R. sup. 1, R. sup. 2 and R. sup. 3 each independently represent ethyl, n-propyl, n-butyl, isobutyl, ethynyl, vinyl or ethoxymethyl or R. sup. 2 and R. sup. 3 taken together form an alkylene bridge of 2 to 4 carbon atoms and X represents a non-phytotoxic anion. The compounds have been found to be active plant growth regulatory control agents.

47012110, Oct 20, 1987

Jun 18, 1985

6/746142

Joseph E. Dunbar - Midland MI
Theodore W. Holmsen - Clayton CA
Herman O. Senkbeil - Beaverton MI

The Dow Chemical Company - Midland MI

A01N 3312
C07C 8730

71121

Compounds are prepared which correspond to the formula ##STR1## wherein R represents hydrogen, chloro, bromo or trifluoromethyl; n represents an integer of from 1 or 2, with the proviso that when R is trifluoromethyl, n is 1; and X represents a non-phytotoxic anion. The compounds have been found to be active plant growth enhancers.