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    • 38. 发明专利
    • PRODUCTION OF SPIROCHROMANE COMPOUND
    • JPH11217386A
    • 1999-08-10
    • JP1978198
    • 1998-01-30
    • FUJI PHOTO FILM CO LTD
    • TANIGUCHI MASAHIKOYAMAKAWA KAZUYOSHI
    • C07D493/10
    • PROBLEM TO BE SOLVED: To provide a method for producing a spirochromane compound by condensing a phenol compound with a ketone compound in the presence of a sulfur-containing compound at as a low temperature as possible, capable of producing the spirochromane compound in a high selectivity in a high yield and in improved productivity at a high reaction speed. SOLUTION: This method for producing a spirochromane compound of formula III comprises condensing a phenol compound of formula I (R -R are each hydrogen, a 1-10C alkyl, a halogen or the like)(for example, methylhydroquinone) with a ketone compound of formula II (R and R are each hydrogen or a 1-20C alkyl) (preferably acetone). Therein, the reaction is carried out in the presence of a sulfur-containing compound of the formula: R -S-R (R is hydrogen or a substituent; R is a substitutent) (for example, thioglycolic acid). The phenol compound of formula I is preferably reacted with the ketone compound of formula II in an amount of 1-5 moles per mole of the phenol compound of formula I in the presence of the sulfur-containing compound in an amount of 0.01-100 mol.% based on the phenol compound of formula I under an acidic condition at temperatures of 20-100 deg.C for 4-24 hr.