Search results
Results from the WOW.Com Content Network
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 .
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 ...
Melting point: 66 °C (151 °F; 339 K) Boiling point: ... It is produced by the vinylation of carbazole with acetylene in the presence of base. [6] Related compounds
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.
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 ...
3-Amino-9-ethylcarbazole (AEC) is a chemical compound commonly used as a chromogenic substrate in immunohistochemistry, specifically for visualizing sections stained with HRP-conjugated secondary antibodies. [1]
N-Ethyl-N-(2-chloroethyl)aniline is the organic compound with the formula C 6 H 5 N(Et)(CH 2 CH 2 Cl) (Et = ethyl). It is a low-melting colorless solid that is an alkylating agent . The compound is a precursor to several cationic azo dyes via reaction of the chloroethyl group with tertiary amines or pyridine followed by azo coupling .
Diethyl azodicarboxylate, conventionally abbreviated as DEAD and sometimes as DEADCAT, [6] [7] is an organic compound with the structural formula CH 3 CH 2 −O−C(=O)−N=N−C(=O)−O−CH 2 CH 3. Its molecular structure consists of a central azo functional group, RN=NR, flanked by two ethyl ester groups. This orange-red liquid is a valuable ...