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Bucherer carbazole synthesis. A third method for the synthesis of carbazole is the Graebe–Ullmann reaction. Graebe–Ullmann reaction. In the first step, an N-phenyl-1,2-diaminobenzene (N-phenyl-o-phenylenediamine) is converted into a diazonium salt which instantaneously forms a 1,2,3-triazole. The triazole is unstable and at elevated ...
It is prepared by condensation of chloranil and 3-amino-N-ethylcarbazole. It has a centrosymmetric angular structure. [ 2 ] For many years, the structure was assigned, incorrectly, as having a "linear structure" ( EC no. 228-767-9, CAS RN 6358-30-1) which differ in terms of the carbazole ring fusion .
Boiling point (°C) K b (°C⋅kg/mol) Freezing point (°C) K f (°C⋅kg/mol) Data source; ... Ethyl Acetate: 77.1 [5] Acetic Anhydride: 139.0 [6] Ethylene ...
An alternative, innovative and highly promising approach to convert LOHC-bound hydrogen into electricity is proposed recently. [1] The new unloading sequence consists of an almost thermoneutral catalysed transfer hydrogenation step converting ketone to secondary alcohol by contacting hydrogen-rich carrier (H18-DBT), and the secondary alcohol is then directly consumed in a PEMFC (direct ...
Melting point: 66 °C (151 °F; 339 K) ... N-Vinylcarbazole is an organic compound used as a monomer in the ... It is produced by the vinylation of carbazole with ...
This page contains tables of azeotrope data for various binary and ternary mixtures of solvents. The data include the composition of a mixture by weight (in binary azeotropes, when only one fraction is given, it is the fraction of the second component), the boiling point (b.p.) of a component, the boiling point of a mixture, and the specific gravity of the mixture.
Polyvinylcarbazole was discovered by the chemists Walter Reppe (1892-1969), Ernst Keyssner and Eugen Dorrer and patented by I.G. Farben in the USA in 1937. [4] [1] PVK was the first polymer whose photoconductivity was known.
Melting point: 114–117 °C (237–243 °F; 387–390 K) Boiling point: 245-248 ... (POFs) through copolymerization with pyrrole, indole, and carbazole. Due to the ...