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2,6-Dichloropyridine is a chloropyridine with the formula C 5 H 3 Cl 2 N. A white solid, it is one of six isomers of dichloropyridine. It serves as a precursor to the antibiotic enoxacin, [2] as well as the drug and anpirtoline and the antifungal liranaftate.
The initially formed 2-chloropyridine reacts further to give 2,6-dichloropyridine. [2] Alternatively, 2-chloropyridines can be conveniently synthesized in high yields from pyridine-N-oxides. [3] 2-Chloropyridine was originally prepared by the chlorination of 2-hydroxypyridine with phosphoryl chloride. [4]
2,4-Dichloropyridine: 26452-80-2-1 2,5-Dichloropyridine: 16110-09-1: 193–194 2,6-Dichloropyridine: 2402-78-0: 211–212 3,4-Dichloropyridine: 55934-00-4: 22–24
Direct halogenation of pyridine with chlorine gas above 270 °C gives a mixture of 2-chloropyridine and 2,6-dichloropyridine. [ 1 ] 2- and 4-chloropyridine are prepared from the corresponding pyridinols using phosphoryl chloride .
An example SDS, including guidance for handling a hazardous substance and information on its composition and properties. A safety data sheet (SDS), [1] material safety data sheet (MSDS), or product safety data sheet (PSDS) is a document that lists information relating to occupational safety and health for the use of various substances and products.
2,6-Dichloro-4-nitroaniline is an organic compound with the formula O 2 NC 6 H 2 Cl 2 NH 2. It is the most widely discussed isomer of dichloronitroaniline, mainly as a precursor to the azo dye disperse brown 1. It is prepared by treatment of 4-nitroaniline with a mixture of hydrochloric acid and hydrogen peroxide (a source of chlorine). [3] [4]
The synthesis of 2,6-diacetylpyridine begins with oxidation of the methyl groups in 2,6-lutidine to form dipicolinic acid. This process has been well established with potassium permanganate and selenium dioxide. [3] The diketone can be formed from the diester of picolinic acid groups through a Claisen condensation. [4]
2,6-Diformylpyridine is an organic compound with the formula C 5 H 3 N(CHO) 2, and typically appears as a solid powder at room temperature. The molecule features formyl groups adjacent to the nitrogen of pyridine .