A novel process for preparing crystalline methyl N-[2-[[[1-(4-chlorophenyl)-1H-pyrazol-3-yl]oxy]methyl]phenyl]-N-methoxycarbamate

The present invention relates to a process for preparing crystalline methyl N-[2-[[[1-(4-chlorophenyl)-1H-pyrazol-3-yl]oxy]methyl]phenyl]-N-methoxycarbamate (I), comprising a) reacting a compound of formula (II) with an alkylating agent in the presence of a base in the presence of a polar solvent selected from alcohols and ketons; b) the addition of water. 本发明涉及制备结晶N-[2-[[[1-(4-氯苯基)-1H-吡唑-3-基]氧基]甲基]苯基]-N-甲氧基氨基甲酸甲酯(I)的方法，其包括：a)使式II化合物与烷基化剂在碱的存在下在选自醇和酮的极性溶剂的存在下反应；b)加入水。