PREPARATION OF POLYHYDROXYBENZOPHENONE

PURPOSE:To obtain the titled compound useful as a photo-stabilizer of plastics, under mild reaction condition, with simple operation, in high yield, without causing the problem of waste gas, by reacting hydroxybenzoic acid with a phenol derivative using boron trifluoride as a catalyst. CONSTITUTION:...

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Bibliographische Detailangaben
Hauptverfasser:	TAKAHASHI FUMITO, HANAOKA SUSUMU
Format:	Patent
Sprache:	eng
Schlagworte:	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
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain the titled compound useful as a photo-stabilizer of plastics, under mild reaction condition, with simple operation, in high yield, without causing the problem of waste gas, by reacting hydroxybenzoic acid with a phenol derivative using boron trifluoride as a catalyst. CONSTITUTION:The objective compound of formula III is prepared by reacting the hydroxybenzoic acid compound of formula I (R1 and R2 are H, halogen, hydroxyl or alkoxy of CnH2n-1O- and at least one of R1 and R2 is hydroxyl; n is 1-18) with the phenol derivative of formula II (R3, R4, R5, R6 and R7 are H, halogen, hydroxyl or alkoxy of CnH2n-1O-, and at least one of R3, R4, R5, R6 and R7 is hydroxyl; n is 1-18) in the presence of boron trifluoride. The amount of the compound of formula I is preferably 0.8-1.2mol, especially 1.0-1.05mol per 1mol of the compound of formula II.