PROCESS FOR PREPARING ESTERS OF 2,6-PYRIDINEDICARBOXYLIC ACIDS

Preparation of 2,6-pyridine-dicarboxylic acid esters of formula (I) comprises reaction of a 2,6-dihalopyridine of formula (II) with carbon monoxide and an alcohol of formula (III) in the presence of a base and a catalyst complex from palladium and a bis-diphenylphosphine derivative of formula (IV)....

Full description

Saved in:
Bibliographic Details
Main Authors RODUIT JEAN-PAUL DR, BESSARD YVES DR
Format Patent
LanguageCzech
English
Published 16.09.1998
Edition6
Subjects
APPARATUS THEREFOR
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
Online AccessGet full text

Cover

More Information
Summary:Preparation of 2,6-pyridine-dicarboxylic acid esters of formula (I) comprises reaction of a 2,6-dihalopyridine of formula (II) with carbon monoxide and an alcohol of formula (III) in the presence of a base and a catalyst complex from palladium and a bis-diphenylphosphine derivative of formula (IV). R1-OH (III). R1 = 1-6C alkyl, 3-6C cycloalkyl, aryl or aralkyl; R2, R3 = H or Cl; R4 = H, 1-6C alkyl, 1-6C alkoxy or F; X = Cl or Br; Q = 3-6C alkanediyl or 1,1'-ferrocenediyl (optionally containing cyclopentadienyl groups substituted by 1-4C alkyl or aryl); R5-R8 = H, 1-4C alkyl, 1-4C alkoxy, CH2F, CHF2, CF3, F, aryl, aryloxy, CN or N(alkyl)2.
Bibliography:Application Number: CZ19980000545