On October 6, 2020, Jung, Ho Yeong; Park, Yong Uk; Kim, Nam Su; Lee, Nam Geol published a patent.Recommanded Product: 7-Bromo-2-phenylbenzo[d]oxazole The title of the patent was Preparation of fluorene derivatives as organic electronic device materials. And the patent contained the following:
Disclosed are compounds I [R1 – R4 are independently H, deuterium, tritium, halo, cyano, nitro, (un)substituted aryl, (un)substituted fluorenyl, (un)substituted heterocyclyl, (un)substituted alicyclyl, (un)substituted alkyl, (un)substituted alkenyl, (un)substituted alkynyl, (un)substituted alkoxy, (un)substituted aryloxy, or N-(L1-Ar1)(L2-Ar2); at least one of R1 and R2 is N-(L1-Ar1)(L2-Ar2) and R3 and R4 may combine together with adjacent groups to form a ring; a and b are independently 0-4; L1 and L2 are independently single bond, (un)substituted arylene, (un)substituted fluorenylene, (un)substituted heterocyclylene, or (un)substituted alicyclylene; Ar1 and Ar2 are independently (un)substituted aryl, (un)substituted fluorenyl, (un)substituted heterocyclyl, or (un)substituted alicyclyl]. Example compound II was prepared by palladium-catalyzed cross-coupling reaction of N,9-diphenyl-9H-fluoren-9-amine with bromobenzene in 88% yield. Electroluminescent device comprising an invention compound showed improvements in efficiency, driving voltage, and life span compared to device using previously reported compound The experimental process involved the reaction of 7-Bromo-2-phenylbenzo[d]oxazole(cas: 1268137-13-8).Recommanded Product: 7-Bromo-2-phenylbenzo[d]oxazole
The Article related to fluorene derivative preparation organic electronic device material, Benzene, Its Derivatives, and Condensed Benzenoid Compounds: Dibenzocyclobutenes, Acenaphthenes, Fluorenes, and Their Benzo Analogs, Such As Fluoranthenes and other aspects.Recommanded Product: 7-Bromo-2-phenylbenzo[d]oxazole
Referemce:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem