• Applied Chemistry for Engineering
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• v.16 no.3
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• pp.403-407
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• 2005

Pyrolysis of methyl ricinoleate, from castor oil, was performed to produce methyl undecenoate. Methyl undecenoate has excellent deodorant, bactericidal and fungicidal activity. The object of this study was to find the optimum temperatures to maximize the yield of methyl undecenoate. The optimum temperatures were at $500^{\circ}C$ and $590^{\circ}C$ for preheating and pyrolysis, respectively. The maximum yield was 46% on the basis of injected methyl ricinoleate. The feeding rate of methyl ricinoleate mixture was selected as the scale-up factor. Maintaining the maximium yield, the feeding rate was scaled-up 20 folds, while the reactor was scaled-up 18 times.

• Journal of the Korean Chemical Society
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• v.27 no.6
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• pp.441-448
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• 1983

A wide variety of vinylic bromides such as (Z)-1-bromopropene, 1-bromo-2-methylpropene, 2-bromo-3-methyl-2-butene, (E)-ethyl 2-methyl-3-bromo-2-propenoate, 1-bromo-cyclohexene has been found to react with ethyl acrylate, ethyl 3-butenoate, allyl cyanide, (E)-ethyl crotonate, ethyl 4-pentenoate, methyl 10-undecenoate and methyl methacrylate in the presence of triethylamine and a palladium acetate-triorthotolylphosphine catalyst. In general, 2,4-dienoic acid derivatives were obtained in good yield and stereochemistry of the products was determined. Using this method, four, five and eleven carbon-carbon extension with ethyl 3-butenoate, ethyl 4-pentenoate and methyl 10-undecenoate was also possible.