US 11,840,542 B2
Method for producing cyclic enol ether compound
Yuki Kashiwagi, Wakayama (JP); and Daichi Sakoda, Wakayama (JP)
Assigned to Kao Corporation, Tokyo (JP)
Appl. No. 17/280,680
Filed by Kao Corporation, Tokyo (JP)
PCT Filed Sep. 20, 2019, PCT No. PCT/JP2019/036991
§ 371(c)(1), (2) Date Mar. 26, 2021,
PCT Pub. No. WO2020/066898, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 2018-183605 (JP), filed on Sep. 28, 2018.
Prior Publication US 2022/0119404 A1, Apr. 21, 2022
Int. Cl. C07D 493/08 (2006.01); B01J 21/06 (2006.01); B01J 31/14 (2006.01); C07C 45/51 (2006.01)
CPC C07D 493/08 (2013.01) [B01J 21/066 (2013.01); B01J 31/143 (2013.01); B01J 2531/31 (2013.01)] 13 Claims
 
1. A method for producing a compound represented by general formula (I), the method comprising:
reacting a compound represented by general formula (II) in the presence of a metal catalyst comprising at least one metal element selected from the group consisting of aluminum, zirconium, and titanium, and an alcohol comprising at least one selected from the group consisting of a primary alcohol and a secondary alcohol to obtain the compound represented by general formula (I),

OG Complex Work Unit Chemistry
wherein the group -A1- (where the front bond denotes a bond that bonds with a carbon atom C1 while the back bond denotes a bond that bonds with a carbon atom C2 is an alkylene group with 4 or more and 16 or less of carbon atoms that may optionally contain a hetero atom and that may optionally have a substituent, and
R1 is hydrogen or an alkyl group with 1 or more and 6 or less of carbon atoms.