反应详情

A 1-liter pressure vessel equipped with a magnetic stirrer, a thermocouple, a thermocontroller, a methyl acetylene reservoir tank, a pressure burette, a gas line, and a control valve, was flushed free of air with nitrogen and charged with 100 ml (1.04 moles) of N-methyl-2-pyrrolidone; 10.0 gm (0.0038 moles) of zinc acetylacetonate; 25.0 gm. (0.12 moles) sebacic acid; 11.0 gms (0.61 moles) water; 5.0 gm (0.093 moles) ammonium chloride; and 135 ml of MAPP gas (65 mole percent methyl acetylene and allene), and heated to 155° C. at a maximum pressure of 550 psi with stirring for about 14 hours. The reaction vessel was allowed to cool at room temperature and an aliquot removed. The aliquot was shaken with diethyl ether and water and the ether layer dried with magnesium sulphate and evaporated to dryness. An infrared spectrum of the dried product in carbon disulphide solution showed quantitative conversion to isopropenyl hydrogen sebacate. The IR spectrum was identical to that of a pure reference sample.

1. customA 1-liter pressure vessel equipped with a magnetic stirrer
2. customa thermocouple, a thermocontroller, a methyl acetylene reservoir tank, a pressure burette, a gas line, and a control valve, was flushed free of air with nitrogen
3. customan aliquot removed
4. stirringThe aliquot was shaken with diethyl ether and water
5. dry with materialthe ether layer dried with magnesium sulphate
6. customevaporated to dryness