3586-83-2Relevant academic research and scientific papers
Synthesis of annulated arenes and heteroarenes involving lewis acid-mediated regioselective annulation of unsymmetrical 1,2-(Diaryl/ diheteroarylmethine)dipivalates
Sivasakthikumaran, Ramakrishnan,Nandakumar, Meganathan,Mohanakrishnan, Arasambattu K.
, p. 9053 - 9071,19 (2012/12/12)
A ZnBr2-mediated regioselective annulation of unsymmetrical 1,2-diarylmethinedipivalates in DCM at room temperature led to the formation of annulated arenes and heteroarenes. The annulation of the dipivalate proceeds through the intermediacy of
Regiospecific synthesis of functionalised 1,3-diarylisobenzofurans via palladium- and rhodium-catalysed reaction of boronic acids with o-acylbenzaldehydes under thermal or microwave activation
Jacq, Jerome,Bessieres, Bernard,Einhorn, Cathy,Einhorn, Jacques
experimental part, p. 4927 - 4933 (2010/11/19)
Variously substituted 1,3-diarylisobenzofurans have been regiospecifically prepared via palladium- and rhodium-catalysed reaction of functionalised boronic acids onto o-acylbenzaldehydes. Rhodium catalysis has furthermore been improved using microwave act
Rubrenes: Planar and twisted
Paraskar, Abhimanyu S.,Ravikumar Reddy,Patra, Asit,Wijsboom, Yair H.,Gidron, Ori,Shimon, Linda J.W.,Leitus, Gregory,Bendikov, Michael
experimental part, p. 10639 - 10647 (2009/12/27)
Surprisingly, despite its very high mobility in a single crystal, rubrene shows very low mobility in vacuum-sublimed or solution-processed organic thin-film transistors. We synthesized several rubrene analogues with electron-withdrawing and electron-donating substituents and found that most of the substituted rubrenes are not planar in the solid state. Moreover, we conclude (based on experimental and calculated data) that even parent rubrene is not planar in solution and in thin films. This discovery explains why high mobility is reported in rubrene single crystals, but rubreneshows very low field-effect mobility in thin films. The substituted rubrenes obtained in this work have significantly better solubility than parent rubrene and some even form films and not crystals after evaporation of the solvent. Thus, substituted rubrenes are promising materials for organic light-emitting diode (OLED) applications.
