ALEXANDRIA, Va., June 5 -- United States Patent no. 12,275,680, issued on April 15, was assigned to Sinochem Hebei Fuheng Co. LTD (Hebei, China) and Sato Planning Co. Ltd (Ibaraki, Japan).
"Method for producing 1,4-dimethyltetralin" was invented by Jianpo Ren (Hebei, China), Lieyi Ji (Hebei, China), Junsheng Wang (Hebei, China) and Bingbing Zhang (Hebei, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "By the control of the cyclization of 5-phenyl-2-hexene at a predetermined temperature, 1,4-dimethyltetralin is efficiently produced. The present invention provides a method for producing 1,4-dimethyltetralin, including a step of cyclizing 5-phenyl-2-hexene under reflux of solvents in the presence of acid c...