Reference of 20265-37-6, Adding some certain compound to certain chemical reactions, such as: 20265-37-6, name is 3-Methoxy-2-nitropyridine,molecular formula is C6H6N2O3, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 20265-37-6.
EXAMPLE 9 1-hydroxy-7-aza-1H-indazole A solution of Na2 CO3 0.10 H2 O (7.3 mmol) in H2 O (10 ml) is emulsified under vigorous stirring at about room temperature or slightly elevated temperature with a solution of 2-nitro-3-methoxypyridine (4.25 mmol) and tetrabutylammonium bromide (10.06 mmol) as phase transfer catalyst in methylene chloride (~20mL). 2-phenyl-5(4H)-oxazolone (~60 mmol) is added in several portions during one hour. The layers are separated and the aqueous phase is washed with CH2 Cl2. The combined organic solutions are dried with Na2 SO4 and is evaporated under reduced pressure. The residue is chromatographed in silica gel starting with petroleum ether to which methylene chloride is gradually added. After recrystallizing, the complex is placed in refluxing methanol to which a catalytic amount of p-toluene sulfonic acid has been added. The sample is refluxed overnight. After cooling and evaporation of the solvent, the above-identified product is isolated.
According to the analysis of related databases, 20265-37-6, the application of this compound in the production field has become more and more popular.
Reference:
Patent; Research Corporation Technologies, Inc.; US5580981; (1996); A;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem