Potassium methyl sulfate

Potassium 4-chloro-3,5-dinitrobenzene-sulfonate, 31, 46 Potassium cyanate, 31, 9 Potassium cyanide, 30, 84 32, 31, 63 Potassium ethyl xanthate, 30, 56 Potassium hydroxide, 30, 103 Potassium iodide, 30, 34 31, 31, 66 Potassium methyl sulfate, 31, 73... 

Potassium 4-chloro-3,5-dinitrobenzene-sulfonate, 31, 46 Potassium cyanate, 31, 9 Potassium cyanide, 30,84 32,31,63 37,47 Potassium ethyl malonate, 37, 34 Potassium ethyl xanthate, 30, 56 Potassium fluoride, 36, 40 Potassium iodide, 30, 34 31, 31, 66 Potassium metal, 37, 29, 30 Potassium methyl sulfate, 31, 73 Potassium nitrate, 31, 46 Potassium 1-nitropropylnitronate, 37, 24 Potassium oxalate, 34, 83 Potassium permanganate, 30, 87 31, 59 Potassium sulfide, 32, 103 Potassium thiobenzoate, 32, 101 Potassium thiocyanate, 32, 39, 40 Prins reaction, 33, 72 Propane, 1, 3-dibromo-2, 2-Ws-(bromo-methyl)-, 31, 82... 

The solid that separated was not identified, but it was presumed to be potassium methyl sulfate. 

Potassium metal, 37, 29, 30 Potassium methyl sulfate, 31, 73 Potassium nitrate, 31, 46 Potassium 1-nitropropylnitronate,... 

Properties Reddish or yellowish oil becomes brownish on exposure to air, volatile with steam. D 1.097 (20C), bp 225C, fp 5C. Soluble in dilute mineral acid, alcohol, and ether insoluble in water. Derivation (1) Reduction of o-mtroamsole with tin or iron and hydrochloric acid (2) heating o-amino-phenol with potassium methyl sulfate. 

N-methyl-d-coniine, C9H19N, has been found in Conium maculatum (110) it is obtained by treating the hydrochloride of the higher boiling fraction of crude coniine with sodium nitrite to remove the coniine as the insoluble nitroso compound. The base is an oil, b.p. 173-174°, d 0.8318, [ ] D + 81.33°, which forms a hydrochloride, m.p. 188-189°, an aurichlo-ride, m.p. 79°, and a chloroplatinate, m.p. 158-160°. It is identical with iV-methyl-d-coniine prepared by methylation of d-coniine with potassium methyl sulfate (167). Von Braun (112) recommends separating V-methyl-coniine from the secondary bases by benzoylation of the latter, v. Braun s base, however, had a low optical rotation and was eventually shown to contain a little ZV-methyl-Z-coniine (168). 

Potassium methyl sulfate pKsp 112 Potassium nitrate Si 52 pKsp 112... 

Reactions of the Hydroxyl Group. The hydroxyl proton of hydroxybenzaldehydes is acidic and reacts with alkahes to form salts. The lithium, sodium, potassium, and copper salts of sahcylaldehyde exist as chelates. The cobalt salt is the most simple oxygen-carrying synthetic chelate compound (33). The stabiUty constants of numerous sahcylaldehyde—metal ion coordination compounds have been measured (34). Both sahcylaldehyde and 4-hydroxybenzaldehyde are readily converted to the corresponding anisaldehyde by reaction with a methyl hahde, methyl sulfate (35—37), or methyl carbonate (38). The reaction shown produces -anisaldehyde [123-11-5] in 93.3% yield. Other ethers can also be made by the use of the appropriate reagent. 

The nitration of l,2,5-selenadiazolo[3,4-/] quinoline 77 with benzoyl nitrate affords the 8-nitro derivative 78, whereas methylation with methyl iodide or methyl sulfate afforded the corresponding 6-pyridinium methiodide 79 or methosulfate 80, respectively (Scheme 29). The pyridinium salt 80 was submitted to oxidation with potassium hexacyanoferrate and provided 7-oxo-6,7-dihydro derivative 81 or, by reaction of pyridinium salt 79 with phenylmagnesium bromide, the 7-phenyl-6,7-dihydro derivative 82. Nucleophilic substitution of the methiodide 79 with potassium cyanide resulted in the formation of 9-cyano-6,9-dihydroderivative 83, which can be oxidized by iodine to 9-cyano-l,2,5-selenadiazolo [3,4-/]quinoline methiodide 84. All the reactions proceeded in moderate yields (81IJC648). 

Excellent yields are obtained by treating methyl sulfate with potassium iodide, and no special apparatus is required. 

After all the methyl sulfate has been added the temperature is raised to 65-70° for about forty minutes to complete distillation of the methyl iodide. The product is separated from a small amount of water, dried thoroughly over anhydrous calcium chloride, and decanted into a dry distilling flask. A few crystals of solid potassium iodide are added, and the material is distilled from a water bath. The yield of methyl iodide, b. p. 41-43°, is 615-640 g. (90-94 per cent of the theoretical amount). Similar yields are obtained with quantities up to ten times the amounts given. 

Surprisingly, the 2,2 -biphenyldiol 63 (Scheme 15) is reported to produce some of the dibenzofuran 64 on methylation with methyl sulfate or iodo-methane in acetone in the presence of potassium carbonate. ... 

Nitromethane has been prepared by the action of methyl iodide on silver nitrite 2 by the action of methyl sulfate on potassium nitrite 3 by the oxidation of methylamine by Caro s reagent 4 by the interaction of potassium nitrite and potassium chloroacetate,5 or, preferably,1 the corresponding sodium salts.6 The use of the calcium salts was found to be of no advantage.1 The only one of the above methods to be studied was the interaction of the sodium salts in boiling aqueous solution. 

Methylfluorene has been prepared by cleavage of ethyl 9-methyl-9-fluorenylglyoxylate,4 by the decarboxylation of 9-methylfluorene-9-carboxylic acid,4 by the decarboxylation of 9-fluorenylacetic acid,6 by the cleavage of 9-methyl-9-acetyl-fluorene with alcoholic potassium hydroxide or soda-lime,6 by the reduction of 9-methyl-9-fluorenol with hydriodic acid in acetic acid,7 by the reaction of 9-fluorenyllithium 8 or -sodium 9 with methyl iodide or methyl sulfate,9 by the cyclization of diphenylmethyl carbinol over platinum-on-carbon at 300°,10 by the reaction of ethyl 9-methoxymcthyl-9-fluorcnylcarboxylate,11 by the diazotization and heating of 2-ethyl-2-aminobiphenyl,12 by the dehydration and then reduction of 9-mcthyl-9-fluorcnol,13... 

Dehydration procedures have led to 2//-thiopyrans. Thus unsubstituted parent heterocycle 6 was prepared by the dehydration of hydroxy derivative 287 with potassium hydrogen sulfate.20 The same procedure applied to a mixture of isomeric hydroxy 2-methyl-5,6-dihydro-2//-thiopyrans and 3,5-dihydroxy-2,4,5,6-tetrahydrothiopyran gives all the corresponding thio-pyrans.91 3-Phenylthiopyran dioxide 289 was obtained after the dehydration of hydroxy derivative 288a with phosphoric acid at elevated temperatures.300,301 The same approach was explored for the preparation of furano-2//-thiopyran 14.42... 

Ault, Haworth and Hirst47 first synthesized the methyl a-D-glycoside methyl ester of 2,3,4-tri-O-methyl-D-mannuronic acid by successive treatment of potassium (methyl a-D-mannopyranosid)uronate with dimethyl sulfate and sodium hydroxide, and then methyl iodide and silver oxide. Although no crystalline derivatives were isolated, there is little doubt about its structure, since the authors48 subsequently proved the presence of a pyranose ring in the starting material for the synthesis, methyl 2,3-O-isopropylidene-a-D-mannoside. The uronic acid has also been synthesized by Smith, Stacey and Wilson,28 who oxidized methyl... 

Pyrolysis of the acetate of benzyl-o-chlorophenylcarbinol at 300° gives the unsaturated halide, o>chlorostilbene. This carbinol is resistant to direct dehydration by potassium hydrogen sulfate at 180°. This method is also superior for the preparation of the olefinic aldehyde, a-isopropyl-acrolein (50%), and the olefinic ketone, methyl isopropenyl ketone (98%). ... 

Mordant 1/2-in. strips of test cloth in the following mordants, which are 0.1 M solutions of the indicated salts. Immerse pieces of cloth in the solutions, which are kept near the boiling point, for about 15 to 20 min or longer. The mordants are ferrous sulfate, stannous chloride, potassium dichromate, copper sulfate, and potassium aluminum sulfate (alum). The alum and dichromate solutions should also contain 0.05 M oxalic acid. These mordanted pieces of cloth can then be dyed with alizarin (1,2-dihy-droxyanthraquinone) and either Methyl Orange or Orange II in the usual way. 

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