Magnesium methylate

A final example appears in Fig. 3.26(c) and (d) where the experimental substance was a magnesium oxide prepared by hydrolysis of magnesium methylate followed by calcination at 500°C. Curve (c) gives a comparison plot of adsorption on a compact against the adsorption on the... 

Other Reactions. a-Nitroalkanoic acids or thek esters can be prepared (54—56) by treating nitroparaffins with magnesium methyl carbonate, or with triisopropylaluminum and carbon dioxide. These products are reduced readily to a-amino acids. 

Magnesium Methylate. Magnesium methoxide [109-88-6] Mg(OCH2)2, mol wt, 86.3, is an almost white powder powder density 0.5 g/mL ... 

Magnesium methylate is sensitive to air and moisture, decomposing to magnesium hydroxide, carbonate, and methanol. It can be stored for one year in polyethylene bags under nitrogen or argon. 

Magnesium methylate is used as a drying agent for alcohols and other organic solvents and as an intermediate in various manufacturing processes, eg, for organomagnesium compounds (79), orthocarbonic esters (80), and for oxide coatings. 

With magnesium methyl bromide tuberostemonine gives a product, which on treatment with ammonium chloride solution yields a substance (a), C24H4JO4N, m.p. 110-2 , but with dilute sulphuric acid, furnishes the dehydrated compound, (b) C24H3903N, m.p. 164 . The results of this reaction are represented as follows —... 

The magnesium methyl iodide is first prepared and is formed by the action of methyl iodide on the metal. T hc magnesium ribbon or powder is placed in a diy, round flaslc... 

An additive compound with zinc methyl is formed, in the fiist leaction ith one molecule, in the second with two molecules, and the pioduct in each case is then decomposed with watei. The leaction with magnesium methyl iodide is similar. 

On page 49 the possible relationships of isopinene and fenchene were mentioned. Komppa and Roschier have prepared a fenchene from o-fencho-camphorone, which they had previously prepared synthetically. The complete synthesis of this fenchene has, therefore, been achieved, a-fencho-camphorone is converted by magnesium methyl iodide into the corresponding alcohol, which is dehydrate by distillation at atmospheric pressure, yielding a-fenchene having the following characters —... 

The last step was to convert the unsaturated acid into its ester and to act on this with an ethereal solution of magnesium methyl iodide, when an almost quantitative yield of an oil was obtained which, on examination, proved to be terpineol—... 

By oxidation with chromic acid, this is converted into cyclohexanone-3-carboxylic acid, in which the —CH. OH— group is converted into the —CO— group. This is converted into its ethyl ester and treated with magnesium methyl iodide, and the product, on hydrolysis, yields l-methyl-cyclohexane-l-ol-3-carboxylic acid, which is converted byhydro-bromic acid into 1-bromo-l - methyl - cyclohexane - 3 - carboxylic acid. When this is digested with pyridine, hydrobromic acid is eliminated and yields l-methyl-A -cyclohexane-3-carboxylic acid of the formula—... 

The ethyl ester of this acid was treated with magnesium methyl iodide, and thus yielded dihydrocarvestrenol—... 

Magnesium Methyl Iodide Methylamine Hydrogen chloride... 

Magnesium methyl carbonate [Magnesium, methoxyOnethyl cjibonato-O-], 121 Maleic acid, methyl ester [2 Butenedioic acid, (Z)-, dimethyl ester], 63 Maganese, tricarbonyl [ (1,2,3,4,5-rj)-l -... 

The grade of the absolute alcohol used in the reduction is very important. Alcohol dried over lime gives very poor yields. In these experiments the alcohol used was dried with magnesium methylate (Org. Syn. 7, 37). 

Figure 24 Comparison of isothermal chemiluminescence intensity for pullulan (1) and pullulan impregnated by methoxy magnesium methyl carbonate (2) from a 5% solution in methanol initial molar mass of pullulan 404 kg/mol, oxygen atmosphere, temperature 190°C.

The carboxylation of nitroalkanes with magnesium methyl carbonate followed by esterification gives a-nitro esters in 40-58% yield.14 Magnesium methyl carbonate is prepared by the saturation of a magnesium methoxide suspension in DMF with C02. More elegantly, sodium salt of nitroalkanes can he carboxylated by means of 1 -ethoxycarbonylbenzotriazole to give a-nitro esters in 55-80% yield (Eq. 5.7).15 Nitroacetic acids and its esters can serve as useful... 

Mercury alkyls are readily obtained by the actions of Grignard reagents (magnesium alkyl halides) on mercury(II) chloride. Thus, mercury dimethyl is made from magnesium methyl chloride and mercury(II) chloride ... 

Alkylation of 2,4-disubstituted-5(477)-oxazolones can be conveniently performed via phase-transfer catalysis. For example, the substrate and an alkyl halide are dissolved in an organic solvent and stirred with an aqueous sodium carbonate solution containing tetrabutylammonium bromide as a phase-transfer catalyst. 4,4-(Diarylmethyl)-2-phenyl-5(4/f)-oxazolones can be prepared in one-step by dialkylation of 146 using magnesium methyl carbonate and the corresponding... 

Stile has developed an alternative way to generate magnesium enolate under mild basic conditions . Ketones react with magnesium methyl carbonate (MMC or Stile s reagent)... 

MACROCYCLIC POLY AMINES, 58, 86, 90 MACROLIDES, 58, 98 Magnesium, bromo phenyl, 58, 138 Magnesium methyl carbonate, 56, 121 Maleic acid, methyl ester, 56, 63 Manganese, tricarbonyl[(l,2,3,4,5-7))-l-carboxy-2,4-cyclopentadien 1 yl], ... 

Ketones of the form RCOCH3 and RCOCH2R can be carboxylated indirectly by treatment with magnesium methyl carbonate 52.613 Because formation of the chelate 53 provides the driving force of the reaction, carboxylation cannot be achieved at a disubstituted a position. The reaction has also been performed on CH3N02 and compounds of the form RCH2N02614 and on certain lactones.61s Direct carboxylation has been reported in a number of instances. Ketones have been carboxylated in the a position to give (3-keto acids.616 The base here was lithium 4-methyl-2,6-di-f-butylphenoxide. 

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