6630-81-5Relevant academic research and scientific papers
Friedel-Crafts arylmethylation: A simple approach to synthesize bipolar host materials for efficient electroluminescence
Ou, Chang-Jin,Lin, Jin-Yi,Mao, Jie,Chu, Shuang-Quan,Zhao, Yu,Xie, Ling-Hai,Cao, Hong-Tao,Zhang, Xin-Wen,Wei, Ying,Huang, Wei
, p. 370 - 378 (2016)
In order to simplify the synthesis of bipolar host materials of OLEDs, a facile synthetic approach was developed and a series of sulfone-contained bipolar host materials were synthesized via mild one-step Friedel-Crafts arylmethylation. Due to π-conjugate-interrupted connection between donor moiety and sulfone moiety, those materials keep high triplet energy and separate the HOMO and LUMO levels. Furthermore, the introduction of sulfone group can significantly lower LUMO level. Based on newly synthesized sulfone-based bipolar host materials, efficient solution-processed sky-blue phosphorescent OLEDs were fabricated with high current efficiency of 16.5?cd/A. Our results demonstrate Friedel-Crafts arylmethylation is powerful synthetic strategy to construct bipolar host materials.
Synthesis of o-Substituted Phenols by Criegee Rearrangement of Benzylic Hydroperoxides
Taljaard, Benjamin,Goosen, Andre,McCleland, Cedric W.
, p. 931 - 934 (2007/10/02)
9-Phenylthioxanthen-9-ol, 10,10-dimethyl-9-phenyl-9,10-dihydroanthracen-9-ol, and 9-arylfluoren-9-ols undergo Criegee-type rearrangements when treated with hydrogen peroxide and acid to generate substituted benzophenones from the first two substrates, and monoesters of biphenyl-2,2'-diol from the fluorenes via subsequent Bayer-Villiger oxidation of the intermediate 2'-aroylbiphenyl-2-ol. 5-Phenyl-10,11-dihydrodibenzocyclohepten-5-ol and its dehydroderivative gave the corresponding heptanone and heptenone on treatment with acid and hydrogen peroxide.Prolonged reaction of the 5-phenyldibenzohepten-5-ol afforded products arising from oxidation of the double bond.
