PROCESS FOR PREPARING PYRIDINE CARBOXYLIC DERIVATIVES

PROCESS FOR PREPARING PYRIDINE CARBOXYLIC DERIVATIVES

A method for preparing pyridine carboxylic acid esters by reacting N-hydroxyamino derivatives of the formula: wherein R5 and R6 are each independently H, COZ, or CN, provided that they are not both H; or R5 and R6 together are -CO-NR10-CO; Z is OR8 or NR8R9; R8 and R9are each independently H or alky...

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Hauptverfasser: BODMAN, MICHAEL P, FRITCH, JOHN R, LARKIN, DONALD R, MUELLAR, WERNER H, ELANGO, VARADARAJ
Format: Patent
Sprache:eng
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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creator BODMAN, MICHAEL P
FRITCH, JOHN R
LARKIN, DONALD R
MUELLAR, WERNER H
ELANGO, VARADARAJ
description A method for preparing pyridine carboxylic acid esters by reacting N-hydroxyamino derivatives of the formula: wherein R5 and R6 are each independently H, COZ, or CN, provided that they are not both H; or R5 and R6 together are -CO-NR10-CO; Z is OR8 or NR8R9; R8 and R9are each independently H or alkyl or aryl; or R8 and R9 together with the nitrogen atom form an aliphatic or aromatic heterocyclic structures and R10 is hydrogen, alkyl, aryl, hydroxy or an alkoxy of 1-6 carbon atoms; with an alpha , beta -unsaturated aldehyde or ketone is disclosed. In an additional embodiment, an alkene of formula R5-CH=CH-R6, wherein R5 and R6 are defined as above, is reacted with hydroxylamine or a salt thereof to form N-hydroxylamino derivatives which are then treated as above.
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In an additional embodiment, an alkene of formula R5-CH=CH-R6, wherein R5 and R6 are defined as above, is reacted with hydroxylamine or a salt thereof to form N-hydroxylamino derivatives which are then treated as above.</abstract><edition>5</edition><oa>free_for_read</oa></addata></record>
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subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
title PROCESS FOR PREPARING PYRIDINE CARBOXYLIC DERIVATIVES
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