US 12,275,680 B2
Method for producing 1,4-dimethyltetralin
Jianpo Ren, Hebei (CN); Lieyi Ji, Hebei (CN); Junsheng Wang, Hebei (CN); and Bingbing Zhang, Hebei (CN)
Assigned to Sinochem Hebei Fuheng Co., LTD, Hebei (CN); and Sato Planning Co., Ltd, Ibaraki (JP)
Appl. No. 17/927,458
Filed by Sinochem Hebei Fuheng Co., LTD, Hebei (CN); and Sato Planning Co., Ltd, Ibaraki (JP)
PCT Filed Aug. 10, 2021, PCT No. PCT/CN2021/111656
§ 371(c)(1), (2) Date Nov. 23, 2022,
PCT Pub. No. WO2022/257261, PCT Pub. Date Dec. 15, 2022.
Claims priority of application No. 202110633215.7 (CN), filed on Jun. 7, 2021.
Prior Publication US 2024/0228408 A1, Jul. 11, 2024
Int. Cl. C07C 15/24 (2006.01); C07C 15/20 (2006.01)
CPC C07C 15/24 (2013.01) [C07C 2602/10 (2017.05)] 4 Claims
 
1. A method for producing 1,4-dimethyltetralin, comprising a step of cyclizing 5-phenyl-2-hexene under reflux of solvents in the presence of acid catalysts, wherein a reaction temperature is controlled in the step of cyclization by adjustment of an extraction amount of solvent in a reflux cooler.