Active Molybdenum-Based Anode for Dehydrogenative Coupling Reactions
作者:Sebastian B. Beil、Timo Müller、Sydney B. Sillart、Peter Franzmann、Alexander Bomm、Michael Holtkamp、Uwe Karst、Wolfgang Schade、Siegfried R. Waldvogel
DOI:10.1002/anie.201712718
日期:2018.2.23
and powerful active anode system that can be operated in 1,1,1,3,3,3‐hexafluoro‐2‐propanol (HFIP) has been discovered. In HFIP the molybdenum anode forms a compact, conductive, and electroactive layer of higher‐valent molybdenum species. This system can replace powerful but stoichiometrically required MoV reagents for the dehydrogenative coupling of aryls. This electrolytic reaction is more sustainable
Stabilised columnar mesophases formed by 1 : 1 mixtures of hexaalkoxytriphenylenes with a hexaphenyltriphenylene-based polymer
作者:Sholto R. McLaren、Daniel J. Tate、Owen R. Lozman、Georg H. Mehl、Richard J. Bushby
DOI:10.1039/c5tc00661a
日期:——
The synthesis is reported for a main chain polymer in which the repeat units are 2,3,6,7,10,11-hexaphenyltriphenylene moieties linked through flexible dodecyl chains.
作者:Benjamin T. King、Jiří Kroulík、Charles R. Robertson、Pawel Rempala、Cameron L. Hilton、Justin D. Korinek、Lisa M. Gortari
DOI:10.1021/jo061515x
日期:2007.3.1
well-established directing group effects in electrophilic aromatic substitution predict the outcome of Scholl reactions of substituted substrates. Activating o,p-directing groups (e.g., MeO) direct bond formation o,p, either intramolecularly or intermolecularly. Deactivating o,p-directing groups (e.g., Br) also direct bond formation o,p but yields are lower. Deactivating m-directors (e.g., NO2) suppress
Catalytic Dehydrogenative Cyclization of
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‐Teraryls under pH‐Neutral and Oxidant‐Free Conditions
作者:Tatsuhiro Tsukamoto、Guangbin Dong
DOI:10.1002/anie.202004719
日期:2020.8.24
A cobaloxime‐catalyzed acceptorless dehydrogenative cyclization of o‐teraryls was developed. In stark contrast to the established methods such as the Scholl or Mallory reactions, this method does not require any strong acids or oxidants, and shows high atom economy and a broad substrate scope. It operates at near room temperature with light as the source of energy. Acid‐ or oxidant‐sensitive functional