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
In sharp contrast to hypervalent iodine(III) compounds, the isoelectronic bromine(III) counterparts have been little studied to date. This knowledge gap is mainly attributed to the difficult-to-control reactivity of λ3-bromanes as well as to their challenging preparation from the highly toxic and corrosive BrF3 precursor. In this context, we present a straightforward and scalable approach to chelation-stabilized
Iodinated Biaryls Synthesized by the Direct Dehydrodimerization of Iodoarenes Using Phenyliodine(III) Bis(trifluoroacetate) (PIFA)
作者:Daniela Mirk、Alexander Willner、Roland Fröhlich、Siegfried R. Waldvogel
DOI:10.1002/adsc.200404024
日期:2004.5
Multiply iodinatedbiaryls can be prepared in yields up to 75% by direct oxidative coupling reaction of the iodinated arenes. The PIFA-mediated dehydrodimerization is superior to all other known methods. The developed protocol is reliable and easy to perform.
A general approach to triphenylenes and azatriphenylenes: total synthesis of dehydrotylophorine and tylophorine
作者:Andrew McIver、Douglas D. Young、Alexander Deiters
DOI:10.1039/b811068a
日期:——
A convergent and flexible synthesis of substituted triphenylenes, azatriphenylenes, and the cytotoxic alkaloids dehydrotylophorine and tylophorine has been developed.
已经开发了一种聚合的,灵活的取代三苯,氮杂三苯以及细胞毒性生物碱脱氢酪氨酸和酪氨酸的合成方法。
Bottom-up synthesis of fully sp<sup>2</sup> hybridized three-dimensional microporous graphitic frameworks as metal-free catalysts
We demonstrated template-free inclusion of the third dimension into the graphitic frameworks while retaining π-conjugation and conductivity, which was verified by their activity as metal-free electrocatalysts for the hydrogen evolution reaction.