PROCESSES FOR PRODUCING 3-SUBSTITUTED 2-CHLORO-5FLUOROPYRIDINE OR SALT THEREOF

Title:

PROCESSES FOR PRODUCING 3-SUBSTITUTED 2-CHLORO-5FLUOROPYRIDINE OR SALT THEREOF

Document Type and Number:

WIPO Patent Application WO/2004/099149

Kind Code:

A1

Abstract:

Processes for producing in high yield a 3-substituted 2-chloro-5-fluoropyridine or salt thereof from an easily available material through a short step under mild reaction conditions using a reagent which can be reacted by a simple procedure and is easy to handle. One of the processes is a process for producing the compound (2) shown below or a salt thereof which comprises reducing the compound (1) shown below or a salt thereof selectively at the 6-position chlorine atom. The other is a process for producing the compound (4) shown below or a salt thereof which comprises replacing the group Z¹ of the compound (2) or salt obtained by the reduction reaction with the group Z². In the following formulae, Z¹ represents -CO₂R¹, etc., wherein R¹ represents hydrogen, alkyl, alkenyl, aryl, aralkyl, or cycloalkyl; and Z² is a group different from Z¹ and represents -CO₂R⁵, etc., wherein R⁵ represents alkyl, alkenyl, aryl, aralkyl, or cycloalkyl.

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Inventors:

MATSUMURA YASUSHI (JP)
MORI NOBUAKI (JP)
YAMADA YASUHIRO (JP)

Application Number:

PCT/JP2004/006267

Publication Date:

November 18, 2004

Filing Date:

April 30, 2004

Export Citation:

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Assignee:

ASAHI GLASS CO LTD (JP)
MATSUMURA YASUSHI (JP)
MORI NOBUAKI (JP)
YAMADA YASUHIRO (JP)

International Classes:

C07D213/80; (IPC1-7): C07D213/803; C07D213/85

Domestic Patent References:

WO1998050362A1

1998-11-12

Foreign References:

EP0634413A1	1995-01-18
US5250548A	1993-10-05

Other References: