METHOD FOR PRODUCING SPIROCYCLIC DERIVATIVE

摘要

PROBLEM TO BE SOLVED: To provide a purifying method with good operability for obtaining a high-quality spirocyclic derivative in high yield. SOLUTION: The objective method for producing a specific spirocyclic derivative comprises reaction between pentaerythritol and at least one specific phosphorus compound; wherein the method is characterized by involving the following process: a crude spirocyclic derivative formed by the above reaction is mixed with hot water at 40-90 deg.C under agitation followed by separation and purification.