Method for producing 3-l-methoxypropane-1,2-diol

Details Method for producing 3-l-methoxypropane-1,2-diol Method for producing 3-l-methoxypropane-1,2-diol

C - Chemistry, Metallurgy

07

C

C07C 31/20 (2006.01) C07C 29/00 (2006.01) C07C 41/03 (2006.01) C07C 41/26 (2006.01) C07C 43/196 (2006.01) C07C 69/003 (2006.01)

Patent

CA 2382863

A method for safely and efficiently producing high purity 3-~-menthoxypropane-1,2-diol and intermediates to be used in the method. As shown in the following reaction formula, 3-~-menthoxypropane-1,2-diol represented by the chemical formula (IV) is produced by adding ~-menthol to a 1,2-epoxy-3-halogenopropane represented by the general formula (I) (wherein X represents a halogen atom) in an organic solvent in the presence of a Lewis acid, thereby producing a 1-halogeno-3-~-menthoxypropan-2-o1 represented by the general formula (II), allowing the first intermediate to react with an alkali metal salt of an aliphatic carboxylic acid having from 1 to 5 carbon atoms to produce a 1-acyloxy-2-substituted-3-~-menthoxypropane represented by the general formula (III) and then hydrolyzing the second intermediate. 54

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