Cyanuric acid, methylation

The hydrohalogenide additions to oxiranes are ether cleavages, of course. A further example for this reaction type is the quantitative reaction of solid 2,4,6-trimethoxy-s-triazine with HCl gas at 100 °C to give cyanuric acid and methyl chloride [221. 

The 5-unsubstituted oxadiazoles are not more stable. The 3-methyl derivative, e.g. is only stable in the cold (0°). On standing at room temperature, it decomposes into acetonitrile and cyanuric acid ... 

Describes the estimation of RDX HMX by nonaqueous titrimetry analysis of HMX, Poly (2,2-dinitropropyl-a cry late, silica, and ethyl methyl 4,4-din itropentanoate in expls determination of PETN silica in LX-02-1 spectrophoto-metric detn of acetyl tributyl citrate in ex-trudable expl LX-02-1 analysis of a mixt of HMX, Viton oxamide analytical procedure for RDX in RX-05 analysis of tungsten HMX in RX-12 analysis of a mock expl 90010 analysis of a mock material for LX-0-4-1 and determination of cyanuric acid, melamine, and Viton in mixt LM-04-0... 

Methyl anthranilate condensed with 646 to give 2-phenyl-4-imino-l,3, 5-triazino[2,l-6]quinazolin-6-one (647) [69JCS(D)1040]. Condensation of the cyanuric acid derivative 648 with methyl anthranilate gave 649 which, upon cyclization, afforded a mixture of the two isomeric 4(2)-ani-lino-4(2)-hydroxy-l,3,5-triazino[2,l- ]quinazolin-6-ones (650 and 651) (75USP3887554). 

Among other electrophilic reagents ctq>able of twinging about the Pummerer rearrangement are halides of organic and inorganic acids. As these halides transform sulfoxides into a-chlorosulfides they complement the sulfide chlorination route to these compounds. Thionyl chloride reacts readily with sulfoxides and 3-keto sulfoxides methyl phenyl sulfoxide furnishes chloromethyl phenyl sulfide (equation 37). Benzoyl chloride and acetyl chloride behave similarly. d yanuric chloii is transformed into cyanuric acid by dimethyl sulfoxide, which in turn is transformed into methyl chloromethyl sulfide (equation 3g).54,S5... 

NITRILES Glutaronitrile. Succinonitrile. Hexamethylphosphoric triamide. Methyl cazboazate. Methyl isocyanate. Phospho-nitrilic chloride. Titanium(IV) chloride. p-Toluenesulfonylhydrazine. Trichloroiso-cyanuric acid. 

The prototropic tautomerism of 1,3,5-triazinones, 1,3,5-triazinethiones, and amino-1,3,5-triazines has been discussed in detail . Cyanuric acid was shown to exist as the trioxo structure by UV and x-ray data. l-Methyl-l,3,5-triazine-2,4,6-(l//,3/f,5/f)-trione has the trioxo form as preferred tautomer (see Section 6.12.3.5) <86CB83>. Compounds (19), (20) and (21) were also shown by IR spectroscopy to show the oxo forms as preferred tautomers carbonyl bands were found at 1677-1730 cm-. ... 

Acetonitril Acetonitrile AI3-00327 CCRIS 1628 Cyanomethane Cyanure de methyl EINECS 200-835-2 Ethyl nitrile HSDB 42 Methane, cyano- Methane-carbonitrile Methyl cyanide Methylkyanid NCI-C60822 NSC 7593 RCRA waste number U003 UN1648 USAF EK-488. Solvent for hydrocarbon extraction processes, especially for butadiene intemnediate catalyst for separation of fatty acids from vegetable oils manufacture of synthetic pharmaceuticals. Liquid mp = -43.8° bp = 81.6° d20 =... 

Of the factors associated with the high reactivity of cyanuric chloride (high exother-micity, rapid hydrolysis in presence of water-containing solvents, acid catalysed reactions, liberation of up to 3 mol hydrogen chloride/mol of chloride, formation of methyl chloride gas with methanol, formation of carbon dioxide from bicarbonates), several were involved in many of the incidents recorded [1] (and given below). The acid catalysed self acceleration and high exothermicity are rated highest [2]. It is also a mildly endothermic compound (AH°f (s) +91.6 kJ/mol, 0.49 kJ/g). 

Hydrogen cyanide in pure form was prepared first in 1815 by Gay-Lussac. Earher, in 1782, Scheel prepared this compound in dilute solution. The most important apphcation of hydrogen cyanide is to produce methyl methacrylate for methacrylate resins and plastics. Other products made from hydrogen cyanide include potassium cyanide, sodium cyanide, adiponitrile, methionine, cyanuric chloride, cyanogen, nitrilotriacetic acid, and several triazine pesticides. The compound also is used in small amounts for extermination of rodents. 

Methylamine occurs in herring brine 2 in crude methyl alcohol from wood distillation,3 and in the products obtained by the dry distillation of beet molasses residues.4 It has been prepared synthetically by the action of alkali on methyl cyanate or iso-cyanurate 5 by the action of ammonia on methyl iodide,6 methyl chloride,7 methyl nitrate,8 or dimethyl sulfate 9 by the action of methyl alcohol on ammonium chloride,10 on the addition compound between zinc chloride and ammonia,11 or on phos-pham 12 by the action of bromine and alkali on acetamide 13 by the action of sodamide on methyl iodide 14 by the reduction of chloropicrin,15 of hydrocyanic or of ferrocyanic acid,16 of hexamethylenetetramine,17 of nitromethane,18 or of methyl nitrite 19 by the action of formaldehyde on ammonium chloride.20... 

The alkyl cyanurates are thermally stable, although they decompose on passing over red hot platinum metal to yield cyanic acid and alkenes. (Trimethyl cyanurate is exceptional it decomposes to methyl isocyanate.)... 

In subsequent steps, DAS is treated in acidic aqueous solution at 0-5 °C with cyanuric chloride dissolved in ethyl methyl ketone. The remaining chlorine atoms are then replaced by aliphatic, cycloaliphatic, or aromatic amines at 15-35 °C and then at ca. 60 °C. The addition of electrolytes (e.g., sodium carbonate, sodium hydroxide) or water-soluble aprotic solvents at 90 to 100 °C or above leads to the desired 3 crystal modification, which is nearly colorless. 

A reactive dye inclusion compound 1 (Figure 12) was prepared by condensing disodium salt of 7-[4-(methylamino)phenylazo]-2,4-naphthalenedisulfonic acid with cyanuric chloride and sodium 3-aminobenzenesulfonate (1 1 1) in the presence of hexaMs(2,3,6-tri-0-methyl)-a-cyclodextrin [41], Solutions of the bright yellow rotaxane 1 are more resistant to chemical bleaching than the uncomplexed dye. This compound anchored to mercerized cotton 2 also showed more photofading resistance [42],... 

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