SELECTIVE SYNTHESIS OF BISPHENOL COMPOUND HAVING KETONE SKELETON DIRECTLY BONDED TO PHENOL NUCLEUS

• Main Authors: SUGAWARA KEIJI, MIYATA SHIRO, MORI SHINICHIRO, SASADA KATSUHIKO, MURAO ATSUHIKO, YONEZAWA NOBUYUKI
• Format: Patent
• Language: English
• Published: 20.06.1991
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; APPARATUS THEREFOR; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; GENERAL METHODS OF ORGANIC CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

PURPOSE:To selectively obtain the subject compound by using as a solvent a phenol having the same structure as the hydrolyzed product of a raw material ester when the corresponding ester is subjected to a Fries conversion reaction. CONSTITUTION:When a compound of formula I (X is an atomic group bonding to carbonyl C atoms at both the group ends to form C-C bonds; Y is an atomic group composed from hetero atoms, aromatic group or aliphatic group; p is an integer of 0-4) is subjected to a Fries conversion reaction to prepare a compound of formula II, a phenol of formula III is employed as a solvent. The concentration of the raw material in the solvent is preferably 1-60g/100g of the solvent and the reaction is performed in the presence of a acidic catalyst such as sulfuric acid or AlCl3 at 130-230 deg.C for 2-10 hours. The compound of formula II is useful as a raw material for condensation polymers and addition- condensation polymers and as a building block for preparing functional compounds.