Methyl propionate pyrolysis

The total contents of saponifiable and free acids in small biological samples were determined by MacGee and Allen [137]. A sample of tissue (3—5 mg) or serum (5—100 /xl) was hydrolysed with a lye, acidified and extracted with /7-hexane. Free acids were extracted from the /7-hexane into a small volume (5—10 ql) of trimethyl-(a,a,a-trifluoro-/ 7-tolyl)ammonium hydroxide. The quaternary salt was injected together with methyl propionate, and methyl esters produced by the pyrolysis were subjected to GC analysis (injection port temperature 240°C, column temperature 180°C, 10% EGSS-X). Comparison of this method with other esterification methods in Table 5.9 shows that it offers at least equally good results. 

Pyrolysis of the crude Ci-C3 alkyl propionate distillate fraction from Table VI, expt. 1 yields ethylene, propylene and propionic acid as the principal products (see Table VIII, expt. 17) where the ethyl and propyl propionate conversions are 53 and 41%, respectively. The methyl propionate passes through the thermolysis unit unchanged. 

Propionic acid, 2-bromo-3-(3-indolyl)-methyl ester rearrangement, 4, 279 Propionic acid, 3-(3,4-dimethyoxyphenyl)-dihydrocoumarin synthesis from, 3, 848 Propionic acid, indolyl-synthesis, 4, 232 Propionic acid, 3-(l-indolyl)-sodium salt pyrolysis, 4, 202 Propionic acid, 3-(3-indolyl)-intramolecular acylation, 4, 220, 221 Propionic acid, 3-phenoxy-chroman-4-one synthesis from, 3, 855 Propionic acid, 3-(3-phenylisoxazoI-5-yl)-bromination, 6, 25... 

Pyrolysis of acetoxy propionate yields acetic acid and methyl acrylate following the... 

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