Alkyl esters of 5-heterocyclic-pyridine-2,3-dicarboxylic acids

Details Alkyl esters of 5-heterocyclic-pyridine-2,3-dicarboxylic acids Alkyl esters of 5-heterocyclic-pyridine-2,3-dicarboxylic acids

1991-06-11

1993-08-24

Lee, Mary C.

Organic compounds -- part of the class 532-570 series

Organic compounds

Unsubstituted hydrocarbyl chain between the ring and the -c-...

540467, 540470, 540488, 540492, 540544, 540553, 544 54, 544 55, 544 96, 544298, 544310, 544333, 546276, 546278, 546280, 546283, 546284, C07D26722, C07D24502, C07D24304, C07D27904, C07D40104, C07D23904, C07D40904

Patent

active

052390705

ABSTRACT:
There are provided alkyl esters of 5-heterocyclic-pyridine-2,3-dicarboxylic acids useful as intermediates for the preparation of highly effective 5-heterocyclic-2-(2-imidazolin-2-yl)pyridine herbicidal agents and methods for the preparation thereof.

REFERENCES:
patent: 4638068 (1987-01-01), Los
patent: 4758667 (1988-01-01), Szczepanski et al.
patent: 4798619 (1989-01-01), Los
patent: 5039333 (1991-08-01), Finn
CA 83:164172x Imidazolidonedicarboxylic acid, Takagi et al. p. 554, 1975.
CA 115:183295k: Preparation of . . . herbicides, Finn, p. 928, 1991.
CA 104(15):130206y Diels-Alder . . . nucleosides, Maggiora et al., 1986.
CA 109(3):22968t Preparation . . . agents, Doehner, 1988.

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