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METHOD FOR PRODUCING OPTICALLY ACTIVE METHYL PHENYLLACTATE CRYSTAL AND OPTICALLY ACTIVE METHYL PHENYLLACTATE CRYSTAL
METHOD FOR PRODUCING OPTICALLY ACTIVE METHYL PHENYLLACTATE CRYSTAL AND OPTICALLY ACTIVE METHYL PHENYLLACTATE CRYSTAL
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机译：制备光学活性的邻苯二甲酸甲酯晶体和光学活性的邻苯二甲酸甲酯晶体的方法
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摘要
PROBLEM TO BE SOLVED: To profitably obtain powdery optically active methyl phenyllactate from an optically active methyl phenyllactate solution obtained by a reaction without concentrating and drying the optically active methyl phenyllactate solution, without producing gel-like crystals, and without causing a trouble on operation and a complicated problem.;SOLUTION: This powdery optically active methyl phenyllactate having a good quality is profitably obtained by [a crystallization method (1)] comprising crystallizing the optically active methyl phenyllactate in a solvent mixture of a saturated hydrocarbon with a compound except the saturated hydrocarbon and then subjecting the product to a solid-liquid separation treatment to obtain the crystals, [a crystallization method (2)] comprising crystallizing the optically active methyl phenyllactate in an alicyclic hydrocarbon solvent and then subjecting the product to a solid-liquid separation treatment to obtain the crystals, or [a crystallization method (3)] comprising dropping the melted product of the optically active methyl phenyllactate to an aliphatic hydrocarbon solvent to crystallize the optically active methyl phenyllactate, and then subjecting the product to a solid-liquid separation treatment to obtain the crystals.;COPYRIGHT: (C)2003,JPO
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