Methanol nitrogen dioxide reaction with

Photolytic. Products identified from the photoirradiation of 2-methylpropene with nitrogen dioxide in air are 2-butanone, 2-methylpropanal, acetone, carbon monoxide, carbon dioxide, methanol, methyl nitrate, and nitric acid (Takeuchi et al., 1983). Similarly, products identified from the reaction of 2-methylpropene with ozone included acetone, formaldehyde, methanol, carbon monoxide, carbon dioxide, and methane (Tuazon et al., 1997). 

Koda, S., K. Yoshikawa, J. Okada, and K. Akita, "Reaction Kinetics of Nitrogen Dioxide with Methanol in the Gas Phase, Enriron. Sci. Techno ., 19, 262-264 (1985). 

Violent reactions with ammonium salts, chlorate salts, beryllium fluoride, boron diiodophosphide, carbon tetrachloride + methanol, 1,1,1-trichloroethane, 1,2-dibromoethane, halogens or interhalogens (e.g., fluorine, chlorine, bromine, iodine vapor, chlorine trifluoride, iodine heptafluoride), hydrogen iodide, metal oxides + heat (e.g., beryllium oxide, cadmium oxide, copper oxide, mercury oxide, molybdenum oxide, tin oxide, zinc oxide), nitrogen (when ignited), silicon dioxide powder + heat, polytetrafluoroethylene powder + heat. 

The gas may be made by the reaction of sodium chlorate with hydrochloric acid with the production of coproduct chlorine (56, 106, 197, 206) or by the reaction of chlorate with concentrated sulfuric acid (225) or a reducing agent such as sulfur (205), sulfur dioxide (225), oxalic acid (225), nitrous acid (5), nitrogen dioxide (169, 221), methanol (54), or organic peroxides (124). Chlorine dioxide may be generated electrolytically from chlorite (51, 188). 

Addition methods were used for the determination of m-saturated compounds and olefins. The methods are based on the additions of bromine to unsaturated bonds, and the waves for the brominated compounds corresponding to the reduction of o, j8-dibromides (involving elimination) are measured. Their heights are proportional to the concentration of the unsaturated compound. Thus vinylchloride and 1,2-dichloroethylene were transformed into l-chloro-l,2-dibromoethane and l,2-dichloro-l,2-dibromoethane, by the action of a 3 M solution of bromine in methanol saturated with sodium bromide. The excess of bromine was removed with ammonia and the polarographic analysis was performed with sodium sulphite or lithium chloride as a supporting electrolyte. On the other hand, acetylene, vinyl-chloride, 1,2-dichloroethylene and 1,1,2-trichloroethylene were determined ) after a 24 hr reaction with bromine in glacial acetic acid (1 1). The excess bromine was removed with a stream of nitrogen or carbon dioxide. An aliquot portion is diluted (1 10) with a 3 M solution of sodium acetate in 80 per cent acetic acid and after deaeration the curve is recorded. 

In 3 L round-bottomed flask there were placed methyl 3,4-dihydro-2-methyl-4-oxo-2H-l,2-benzothiazine-3-carboxylate 1,1-dioxide, 2-aminopyridin and dry xylene. Nitrogen gas was then bubbled into the suspension for 5 min, then the reaction mixture was heated to begin a period of slow distillation, with complete solution effected during the first 10 min of heating. After 5.5 h, the period of slow distillation was discontinued and reaction mixture was allowed to heat at reflux for approximately 16 h. After that the reaction mixture was cooled to room temperature and filtered. The solid material was crystallized from chloroform with methanol and againe from methanol and then there were obtained piroxicam, melting point 197°-200°C, dec. 

---