METHYL ALCOHOL Subject

Wax esters have similar relative molecular masses to diacylglycerols and are eluted under comparable gas chromatographic conditions. Alternatively, the alcohol and fatty acid moieties can be released by saponification and their methyl esters subjected to gas chromatography. 

Degraded arabic acid was then methylated and the methyl derivative subjected to hydrolysis with methyl alcoholic hydrogen chloride. Examination of the cleavage fragments showed them to consist of the glycosides of the substances given in column one of Table II. 

Chromium tetraphenyl iodide in methyl alcohol or moist chloroform is treated with silver oxide, or the iodide is subjected to electrolysis, using an alcohol solution with a platinum or mercury cathode and a rotating silver anode. One molecule of wTater is removed by drying over calcium chloride. The base forms orange-coloured plates, M.pt. 104° to 105° C. when placed in a bath previously heated to 95° C. It dissolves readily in water or alcohols, is sparingly soluble in chloroform, insoluble in benzene or ether. Measurements of its conductivity in aqueous solution show that it is comparable in strength with the alkali hydroxides, whilst comparative tests in methyl alcohol solution show that it is a stronger base than chromium pentaphenyl hydroxide. It may readily be converted into the chloride, bromide and iodide. 

Because pH of the medium is so essential for the alcoholysis of triace-toxyphenylsilane, at this stage the acidity of the reactive mixture is monitored. pH should be about 1+2. If pH >2, reactor 5 is filled with an additional quantity of phenyltrichlorosilane from batch box 2, reducing the temperature to 30-40 °C prior to that. After phenyltrichlorosilane has been added, the mixture in the apparatus is held at 45-55 °C at least for 1 more hour and then checked for acidity and appearance. If the analysis is positive (pH 1+2), the mixture is sampled and sent to the laboratory, where tri-acetoxyphenylsilane is subjected to alcoholysis with methyl alcohol to determine the onset temperature for the distillation of methylacetate (58-68 °C in the reactive mixture). If at this temperature methylacetate does not distil, reactor 5 is filled from batch box 2 with an additional amount of phenyltrichlorosilane. The sample is chosen in such a way that the solid and liquid phases are approximately 1 1. 

Fig (19) Octalin ketal (163) is converted to kete dithioacetal (164) by the cleavage of ketal function and condensation with carbon disulfide and methyl iodide. Subjection of (164) to the action of dimethylsulfonium niethylide and acid hydrolysis leads to the formation of unsaturated lactone (165).lts furan silyl ether derivative is caused to undergo Diets-Atder reaction with methyl acrylate to obtain salicyctic ester (166) which is converted by standard organic reactions toabietane ether (167). It is converted to aiiylic alcohol (168) by epoxidation and elimination. Alcohol (169) obtained from (168) yields orthoamide which undergoes transformation to amide (170). Its conversion to the previously reported intermediate has been achieved by epoxidation, elimination and hydrolysis. 

The degree of decomposition by the voltaic arc depends of course, to a great extent upon the chemical nature of the liquids and vapors in which the luminous arc is produced While ether, methyl alcohol, ethyl alcohol, glacial acetic acid, and other aliphatic fluids and their vapors are subject to decompositions with very trifling charring, and give products which are chemically closely related to the products started with, benzene, toluene, nitrobenzene, aniline, naphthalene, phenol, and other members of the aromatic series are destroyed, and considerable charring results. 

Berthelot s observations are confirmed by the experiments of A. Slosse,2 who, by subjecting a mixture of 1 volume carbon monoxide and 2 volumes hydrogen to the induction action in an ozonizer, obtained a crystalline, fermentable sugar which could have been formed from formaldehyde and methyl alcohol— both of which can be shown to be present—by the further action of the discharge ... 

A. Hemptinne subjected a large number of substances to rapid electric oscillations in an arrangement which, according to the method of Lecher,3 permitted an investigation of the influence of various wave lengths.4 He found that methyl alcohol 6 at 15 mm. pressure and with weak oscillations gave ... 

The crude product is subjected to a first purification by distillation the first portions are collected separately and yield methyl alcohol (q.v.) the remainder of the distillate is the distilled pyroligneous acid, used to a limited extent as an antiseptic, but principally for the manufacture of acetic acid and the acetates. 

Methyl Alcohol, CH3OH.—Compounds occur in certain plants from which methyl alcohol can be easily obtained in small quantities. When methyl salicylate (oil of wintergreen), which is present in checkerberries, is heated with a solution of sodium hydroxide, methyl alcohol and the sodium salt of salicylic acid are obtained. The alcohol is formed, along with other substances, when wood is subjected to destructive distillation. This method is used in the industrial preparation of methyl alcohol, which is commercially known as wood-spirit. 

Tricyclic ketone 215 was converted by previously reported procedures to the ketoacid 218, which was treated with methylenetriphenylphosphorane to introduce the exocyclic methylene on the D ring (219) (Scheme 25). The ester was then converted to the aldehyde (220), treated with isopropenylmagnesium bromide to yield the allylic alcohol, subjected to Claisen rearrangement with methyl or thioacetate, and the resulting aldehyde converted to the tetramethyl allylic alcohol 208 by the previously described sequence (210 — 212, Scheme 24). The polyolefinic precursor to the serratene skeleton was obtained in overall yield of 3.1% from m-methoxycinnamic acid. 

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