220649-62-7Relevant academic research and scientific papers
Gold Catalysis Meets Materials Science – A New Approach to π-Extended Indolocarbazoles
Hendrich, Christoph M.,Bongartz, Lukas M.,Hoffmann, Marvin T.,Zschieschang, Ute,Borchert, James W.,Sauter, Désirée,Kr?mer, Petra,Rominger, Frank,Mulks, Florian F.,Rudolph, Matthias,Dreuw, Andreas,Klauk, Hagen,Hashmi, A. Stephen K.
, p. 549 - 557 (2021)
Herein we describe a modular, convergent synthesis of substituted benzo[a]benzo[6,7]-indolo[2,3-h]carbazoles (BBICZs) using a bidirectional gold-catalyzed cyclization reaction as a key step. A building block strategy enabled the easy variation of substituents at different positions of the core structure and a general analysis of substitution effects on the materials properties of the target compounds. All BBICZs were fully characterized and their optical and electronic properties were studied experimentally as well as by computational methods. Organic thin-film transistors based on eight selected derivatives were fabricated by vacuum deposition and charge-carrier mobilities up to 1 cm2/Vs were measured. (Figure presented.).
Carbene transfer - A new pathway for propargylic esters in gold catalysis
Lauterbach, Tobias,Gatzweiler, Sabrina,Noesel, Pascal,Rudolph, Matthias,Rominger, Frank,Hashmi, A. Stephen K.
supporting information, p. 2481 - 2487 (2013/10/21)
Gold (homepage: http://www.hashmi.de) carbenes generated via 1,2-migration of a propargylic ester group can be transferred over a tethered alkyne. The use of aromatic backbones leads after a 1,7-carbene transfer to a benzyl-stabilized carbene as intermediate. A 1,2-shift of a methyl group delivers vinyl-substituted β-naphthol derivatives as the final products. Copyright
Gold-catalyzed oxidative cyclizations of 2-oxiranyl-1-alkynylbenzenes for diastereoselective synthesis of highly substituted 2-hydroxyindanones
Chaudhuri, Rupsha,Liu, Rai-Shung
supporting information; experimental part, p. 2589 - 2592 (2011/12/01)
We report the gold-catalyzed oxidative cyclizations of 2-oxiranyl-1- alkynylbenzenes into highly substituted 2-hydroxyindanone frameworks bearing a tertiary alcohol. Such gold-catalyzed reactions comprise an initial internal redox reaction, sulfoxide oxidation of α-carbonyl gold-carbenoids, followed by gold-catalyzed formal ene reactions on the resulting diketone intermediates. Copyright
Synthesis and cycloaromatization kinetics of aromatic allene enynes
Dopico, Pablo G.,Finn
, p. 29 - 62 (2007/10/03)
Aryl- and cyclopropyl-substituted allene enynes were prepared by a double olefination procedure from various aldehydes; and their cycloaromatization reactions were subjected to kinetics measurements in methanol and 1,4-cyclohexadiene solvents. The results
