METHOD FOR PRODUCING 4-[1',2',3',4',4'a,9'a-HEXAHYDRO-6'-HYDROXYSPIRO(CYLOHEXANE-1,9'-XANTHEN)-4'a-YL]RESORCINOL

摘要

PROBLEM TO BE SOLVED: To provide a production method that permits very industrially advantageous acquisition of 4-[1',2',3',4',4'a,9'a-hexahydro-6'-hydroxyspiro(cylohexane-1,9'-xanthen)-4'a-yl]resorcinol exhibiting a clathrating ratio of at most 24%. SOLUTION: The production method comprises a step of adding dropwise into water a solution obtained by dissolving a methanol adduct of 4-[1',2',3',4',4'a,9'a-hexahydro-6'-hydroxyspiro(cylohexane-1,9'-xanthen)-4'a-yl]resorcinol in a methanol solvent. COPYRIGHT: (C)2009,JPO&INPIT