METHOD FOR PRODUCING 2-AMINO-SUBSTITUTED BENZALDEHYDE COMPOUND

Title:

METHOD FOR PRODUCING 2-AMINO-SUBSTITUTED BENZALDEHYDE COMPOUND

Document Type and Number:

WIPO Patent Application WO/2016/035609

Kind Code:

A1

Abstract:

The present invention provides a method for producing a benzaldehyde in which an amino group is bonded in the 2 position, a halogeno group or an alkoxy group is bonded in the 3 position, and a hydrogen atom, an alkyl group, a halogeno group, an alkoxy group, or a cyano group is bonded independently in each of the 4, 5, and 6 positions, the method including: preparing a benzaldehyde in which a halogeno group or an alkoxy group is bonded in the 3 position, a hydrogen atom is bonded in the 2 position, and a hydrogen atom, an alkyl group, a halogeno group, an alkoxy group, or a cyano group is bonded independently in each of the 4, 5, and 6 positions so that a lithiation reaction is most active at the 2 position; acetal-protecting a formyl group in the benzaldehyde; sequentially performing lithiation, azidation, and amination of the 2 position; and then performing acetal deprotection.

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Inventors:

KOBAYASHI SHINICHI (JP)

Application Number:

PCT/JP2015/073836

Publication Date:

March 10, 2016

Filing Date:

August 25, 2015

Export Citation:

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Assignee:

NIPPON SODA CO (JP)

International Classes:

C07C221/00; C07C223/06; C07D317/16; C07D317/28; C07B51/00; C07B61/00

Foreign References:

DE2306919A1	1974-08-15
JP2003503495A	2003-01-28
JP2013237648A	2013-11-28
CN103030568A	2013-04-10

Other References:

DATABASE REGISTRY [o] 11 May 2014 (2014-05-11), XP055418282, retrieved from STN Database accession no. 1602097-79-9
DATABASE REGISTRY [o] 6 May 2014 (2014-05-06), XP055418284, retrieved from STN Database accession no. 1598290-52-8
DATABASE REGISTRY [o] 8 June 2008 (2008-06-08), XP055418286, retrieved from STN Database accession no. 1026338-21-5
DATABASE REGISTRY [o] 11 May 2014 (2014-05-11), XP055418288, retrieved from STN Database accession no. 1602359-03-4

Attorney, Agent or Firm:

SHIGA Masatake et al. (JP)
Masatake Shiga (JP)

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