Novel process for the preparation of substantially pure 5-(3,5-dimethylphenoxy)methyl-2-oxazolidinone
申请人:Gandhi Jaiprakash Biren
公开号:US20050075505A1
公开(公告)日:2005-04-07
Substantially pure 5-(3,5-dimethylphenoxy)methyl-2-oxazolidinone, a compound of formula (1), is prepared by a novel route, which comprises reacting 3-(3,5-dimethylphenoxy)-2-hydroxypropylamine, a compound of formula (2), or its acid addition salt with a compound of formula (3) (YCOZ) wherein Y and Z are selected from X, CC13CO, 1-imidazolyl or substituted imidazolyl, and OR; wherein X is a halide, preferably chloride, and R is selected from substituted or unsubstituted linear, branched or cyclic alkyl and aryl or heteroaryl radicals. The compound of formula (2) is prepared by treating 2-[(3,5-Dimethylphenoxy)methyl]oxirane with ammonia to yield compound of formula (2), and optionally purifying compound of formula (2) by converting to its acid addition salt.
化合物5-(3,5-二甲基苯氧基)甲基-2-噁唑烷酮(式(1))的高纯度制备方法,包括将式(2)化合物3-(3,5-二甲基苯氧基)-2-羟基丙胺或其酸加成盐与式(3)化合物YCOZ反应,其中Y和Z从X,CC13CO,1-咪唑基或取代的咪唑基和OR中选择,其中X是卤素,优选氯,R选择取代或未取代的线性、支链或环烷基和芳基或杂环芳基基团。式(2)化合物的制备方法是将2-[(3,5-二甲基苯氧基)甲基]环氧烷与氨反应得到式(2)化合物,可选择通过转化为其酸加成盐来纯化式(2)化合物。