PROCESS FOR PRODUCING FLUORANE-COMPOUNDS

摘要

Fluorene derivs. of general formula (I), where R, R1, R2, R4 are H, or halogen atoms, low C alkyl- or alkoxy- gps.; R3 is H or halogen atom, loW C alkyl or alkoxy gp. or a gp. of formula (IV) -NX3X4; X1, X2, X3 and X4 = H atom, opt. substd. 1-12C alkyl gp. = H atom or alkyl gp. or formyl gp. or an alkenoyl gp. are prepd. as follows: (1) A keto-acid (II) and a phenol deriv. (III) react. (2) The reaction prod. of (stage (I)) is added to a mix contg. non poker solvent, a base, and water at 50-90 deg.C. (3) Organic phase is sepd.. (4) Organic solvent is removed. @(1pp Dwg.No.0/0)@