METHOD OF PREPARING 2-ARYLOXY-4-CHLOROPYRIDINE DERIVATIVES Russian patent published in 2000 - IPC

Abstract RU 2152931 C2

FIELD: medicine. SUBSTANCE: described is method of preparing 2-aryloxy-4-chloropyridine derivatives of formula I: wherein R1 is C1-C4 alkyl; R2 is methyl or ethyl; R3, R4 and R5 are C1-C4 alkyl or (C1-C4 alkoxy or pharmaceutically acceptable salts thereof by reacting compound of formula II with phenol of formula III: wherein R1-R5 are as defined above, in the presence of base capable to deprotonate compound of formula III, and in the presence of metallic halide and pyridine followed by conversion optionally of the resulting compound into pharmaceutically acceptable salt. Compound of formula I are useful as intermediate compound to prepare 2- phenoxypyridine derivatives which are antagonists of corticotropin releasing factor and are used for treating various diseases, e.g. inflammatory diseases. EFFECT: more efficient preparation method. 6 cl, 1 ex

Similar patents RU2152931C2

Title Year Author Number
PYRAZOLO- AND PYRROLOPYRIDINES 1995
  • Jufing L.Chen
RU2135498C1
DERIVATIVES OF PYRROLO[2,3-D]PYRIMIDINES, PHARMACEUTICAL COMPOSITION, PYRROLO[2,3-D]PYRIMIDINES, DERIVATIVES OF PYRROLE 1993
  • Jukhping L.Chen
RU2124015C1
INDOLE DERIVATIVES AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEREOF 1993
  • Dzhon E.Mejkor
  • Elanta T.Novakovski
RU2124012C1
PYRAZOLOPYRIMIDINES AND THEIR PHARMACEUTICALLY ACCEPTABLE SALTS 1993
  • Jukhping Liang Chen
RU2124016C1
METHODS OF SYNTHESIS OF 2-PHENYL-3-AMINOPYRIDINE OR ITS ACYLATED DERIVATIVE OR THEIR SUBSTITUTED PHENYL DERIVATIVES 2000
  • Braish Tamim Fekhme
  • Kehron Stefan
  • Kastaldi Majkl Dzhejms
RU2181120C2
TRICYCLIC 5,6-DIHYDRO-9H-PYRAZOLO-[3,4-C]-1,2,4-TRIAZOLO- -[4,3-A]-PYRIDINES, METHOD OF INHIBITION OF ACTIVITY OF PHOSPHODIESTERASE TYPE IV AND METHOD OF INHIBITION OF TUMOR-SPECIFIC NECROSIS FACTOR PRODUCING 1996
  • Allen Jakob Daplehntir
  • Kelvin Kuper
RU2161158C2
INDOLE DERIVATIVES OR THEIR PHARMACEUTICALLY ACCEPTABLE SALTS 1993
  • Dzhon I.Mehjkor[Us]
  • Martin Dzh.Uits[Gb]
RU2101283C1
2,7-SUBSTITUTED DERIVATIVES OF OCTAHYDROPYRROLO[1,2-A]PYRAZINE, METHOD OF TREATMENT, PHARMACEUTICAL COMPOSITION, AND INTERMEDIATES 1996
  • Mark A. Sehnner
RU2162470C2
SUBSTITUTED PYRAZOLES, PHARMACEUTICAL COMPOSITION BASED ON SAID, METHOD OF PATIENT TREATMENT, INTERMEDIATE COMPOUND 1993
  • Dzhen M.Brajt
  • Uillard M.Uehlch
RU2130453C1
BENZOPYRANE AND BENZOCONDENSED COMPOUNDS, INTERMEDIATE COMPOUNDS, PHARMACEUTICAL COMPOSITION AND A METHOD OF INHIBITION 1995
  • Mark A.Dombroski
  • Kevin Kokh
  • Ehntoni Daniehl' Piskop'O
RU2128655C1

RU 2 152 931 C2

Authors

Chen Jukhping L.

Ruggeri Salli Gut

Dates

2000-07-20Published

1995-06-06Filed