106. Synthesis of alkylphenanthrenes. Part VI. Attempts to synthesise the hydrocarbon “C<sub>16</sub>H<sub>14</sub>'” derived from strophanthidin
作者:Robert Downs Haworth、Cecil Robert Mavin、George Sheldrick
DOI:10.1039/jr9340000454
日期:——
RABINOVITZ, M.;TAMARKIN, D., SYNTH. MET., 23,(1988) N-4, C. 487-491
作者:RABINOVITZ, M.、TAMARKIN, D.
DOI:——
日期:——
HETEROCYCLIC BRIDGED BIPHENYLS
申请人:Schäfer Thomas
公开号:US20100109514A1
公开(公告)日:2010-05-06
The present invention relates to compounds of the formula (I), a process for their preparation and their use in organic light emitting diodes (OLEDs), especially as host for phosphorescent compounds. The hosts may function with phosphorescent materials to provide improved efficiency, stability, manufacturability, or special characteristics of electroluminescent devices.
US9353065B2
申请人:——
公开号:US9353065B2
公开(公告)日:2016-05-31
Ring Closure of Heterocyclic Systems by Potassium-Graphite Intercalat - C<sub>8</sub>K
作者:Dov Tamarkin、Yoram Cohen、Mordecai Rabinovitz
DOI:10.1055/s-1987-27889
日期:——
Potassium-graphite intercalate C8K is the reagent of choice for the ring closure of the dianions of 2,3-diarylquinoxalines derivatives 1-3 to the dianions of dibenzo[a,c]phenazine derivatives 4-6 in high yields and high degree of purity. This process appears to occur via a thermal electrocyclic process of the dianions.