NEW MATERIAL:1-Isopropyl-2,2-dimethyl-1,3-propylene carbonate of the formula.
USE: A stable liquid substance, useful in various fields, e.g. organic electrolytes, ink media, particularly additives for special ink such as high-speed recording ink jet, reaction solvents, solvents in dispersion systems, etc., having a low freezing point, high boiling point and dielectric constant, capable of retaining a high fluidity (low viscosity) in a wide temperature range, and insoluble in water.
PROCESS: 2,2,4-Trimethyl-1,3-pentanediol as a raw material is subjected to the ester interchange with a dialkyl carbonate, preferably diethyl carbonate, to give the compound of the formula. The ester interchange reaction is carried out in the presence of a catalyst, e.g. p-toluenesulfonic acid, while dealcoholizing the reaction system under heating conditions.
TANIMOTO FUMIO
INOUE YOSHIHARU
JOURNAL OF ORGANIC CHEMISTRY=1959
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