26960-97-4Relevant articles and documents
A Light- and Electricity-Driven Molecular Pushing Motor
Burkhart, Christoph,Haberhauer, Gebhard
, p. 1308 - 1317 (2017)
The synthesis and investigation of molecular artificial motors have been subject to massive developments in recent years. One challenge is to design machines driven by “clean” stimuli. Types of energies are considered as “clean” stimuli if their use leads to (almost) no side-products, no byproducts, no dilution, or any other disruptive effects. We present herein a pushing motor that is driven by light and electricity, both being considered as “clean” stimuli. The switching units of the motor are an azobenzene and a thianthrene. The former is triggered by light, whereas the latter changes its structure as a result of a redox process achieved by cyclic voltammetry. The four states of the molecular motor were identified by quantum chemical methods and UV/Vis spectroscopy. The switching cycles can be performed several times without significant changes in the signals.
Nitrosation of aryl and heteroaryltrifluoroborates with nitrosonium tetrafluoroborate
Molander, Gary A.,Cavalcanti, Livia N.
experimental part, p. 4402 - 4413 (2012/06/18)
Organotrifluoroborates have emerged as an alternative to toxic and air- and moisture-sensitive organometallic species for the synthesis of functionalized aryl and heteroaryl compounds. It has been shown that the trifluoroborate moiety can be easily converted into a variety of different substituents in a late synthetic stage. In this paper, we disclose a mild, selective, and convenient method for the ipso-nitrosation of organotrifluoroborates using nitrosonium tetrafluoroborate (NOBF4). Aryl- and heteroaryltrifluoroborates were converted into the corresponding nitroso products in good to excellent yields. This method proved to be tolerant of a broad range of functional groups.
