Method for producing aldehyde compound, and acetal compound

Patent metadata

Field	Value
Publication number	US-10040743-B2
Application number	US-201515538443-A
Country	US
Kind code	B2
Filing date	Dec 17, 2015
Priority date	Dec 24, 2014
Publication date	Aug 7, 2018
Grant date	Aug 7, 2018

Abstract

Provided are a method for producing 3-methylglutaraldehyde in a good yield under a mild condition and a novel acetal compound which is useful for carrying out the foregoing method. The method is a production method of 3-methylglutaraldehyde including a step of hydrolyzing a compound represented by the following general formula (1):

wherein R 1 and R 2 each independently represent an alkyl group having 1 to 6 carbon atoms, or are mutually coupled to represent an alkylene group having 2 to 6 carbon atoms.

First claim

The invention claimed is:

1. A production method of 3-methylglutaraldehyde, comprising:
hydrolyzing a compound represented by the following general formula (1):

wherein R 1 and R 2 each independently represent an alkyl group having 1 to 6 carbon atoms, or are mutually coupled to represent an alkylene group having 2 to 6 carbon atoms.

2. The production method according to claim 1 , further comprising:
subjecting a compound represented by the following general formula (2) to hydroformylation to obtain the compound represented by the general formula (1):

wherein R 3 and R 4 each independently represent an alkyl group having 1 to 6 carbon atoms, or are mutually coupled to represent an alkylene group having 2 to 6 carbon atoms.

3. The production method according to claim 2 , further comprising:
subjecting 3-methyl-3-buten-1-al to acetalization, to obtain the compound represented by the general formula (2).

4. A compound represented by the following general formula (3):

wherein R 5 represents a linear alkylene group having 2 carbon atoms.

5. A compound represented by the following general formula (3):

wherein R 5 represents a linear alkylene group having 4-6 carbon atoms.

Assignees

• Kuraray Co

Inventors

• Tsuruta Takuo
• Shimizu Ryosuke
• Hosono Takahiro
• Minamoto Naoya

Classifications

• C07C47/12

  containing more than one —CHO group · CPC title

• C07C45/59

  in five-membered rings (from ozonides C07C45/40) · CPC title

• C07C45/42 Primary

  by hydrolysis · CPC title

• C07D317/12 Primary

  with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to ring carbon atoms · CPC title

• C07D317/26

  Radicals substituted by doubly bound oxygen or sulfur atoms or by two such atoms singly bound to the same carbon atom · CPC title