Ueber Bromderivate des Chinophtalons

Abstract

A. E i b n e r und 0. L a n g e studirten vor ciniger Zeit') die Einwirkung von Brom auf Chinophtalon in der Annahme, anch hierdurch die asymmetrische Constitution desselben beweisen zu konnen und faoden zungchst, dabs dieser Farbstoff in Eisessiglihung ein schwach g e l b g e f a r b t e s , krystallisirtes Monobromderivat vom Schmp. 1790 und daneben bei laogerer Einwirkung ein ziegelrothcs, klein-bis undeutlich krystallinisches zweites Bromproduct liefert, welches seiner Zeit im Sinne des Brommethylenphtaliddibromiira van Gabriela) als ein Tribromid von der Form [Mittheilung aus dem nrganischchemischen Laboratorium der technischeo Br Br Br ,,/C[i C<--

Facile Thiol–Ene Click Protocol Using Benzil as Sensitizer and White LED as Light Source

“…Apart from the conventional route of organic transformations, in the early 1900s, Alexander Eibnern [ 1,2 ] followed by V.N. Filimonov [ 3 ] came with a new concept of using photons in organic transformations.…”

Recent Developments in Photocatalytic Reduction of Nitro Compounds to Valuable Scaffolds

“…Photocatalysis 28,29 has emerged as a basic concept in recent time since the word coined in 1911 by scientists. 30 Semiconductors are suitable materials to work as photocatalysts because they can conduct electricity even at room temperature in the presence of light. A photocatalyst provides a simultaneous environment for oxidation and reduction procedures.…”

The Role of Computational Chemistry in Discovering and Understanding Organic Photocatalysts for Renewable Fuel Synthesis

“…Compared to the field of photocatalysis employing inorganic solid‐state photocatalysts, the history of which dates back to the early twentieth century, [ 17–19 ] and which underwent an enormous surge of interest [ 20 ] after the 1972 report by Fujishima and Honda [ 21 ] on the photoelectrochemical splitting of water using a TiO 2 photoanode, photocatalysis based on the use of organic solid‐state materials as photocatalysts is much younger. Probably the earliest report of an organic photocatalyst, at least for H 2 evolution, is the 1985 study by Yanagida et al.…”

“…Compared to the field of photocatalysis employing inorganic solid-state photocatalysts, the history of which dates back to the early twentieth century, [17][18][19] and which underwent an enormous surge of interest [20] after the 1972 report by Fujishima and Honda [21] on the photoelectrochemical splitting of water using a TiO 2 photoanode, photocatalysis based on the use of organic solid-state materials as photocatalysts is much younger. Probably the earliest report of an organic photocatalyst, at least for H 2 evolution, is the 1985 study by Yanagida et al [22] In this review the role computational chemistry plays in helping to rationalize the ability of organic materials, such as conjugated polymers, to drive photocatalytic water splitting and CO 2 reduction, and the discovery of new organic photocatalysts, is reviewed.…”