KR960700994A - Catalyst for preparing aryl ester and method for preparing aryl ester using the catalyst - Google Patents

Abstract

A catalyst for preparing an aryl ester containing a micromultiprocessing material containing a metal element belonging to Group IV, which is insoluble in the reaction solution, so that a heterogeneous catalyst can be used. Can be produced in high yields. To prepare an aryl ester using a catalyst, a carbonate or aliphatic carboxylate is transesterified with an aromatic hydroxy compound, an aryl carboxylate is transesterified with a carbonate, or an alkyl aryl carbonyl. The bonate is disproportionated by transesterification.

Description

Catalyst for preparing aryl ester and method for preparing aryl ester using the catalyst

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Claims (24)

In the presence of a heterogeneous catalyst comprising a carbonate represented by the following general formula (I) and a micropolyprocess material containing a metal element belonging to group IV with an aromatic hydroxy compound represented by the following general formula (II) Method for producing an aryl carbonate comprising the step of transesterification in the liquid phase to obtain an aryl carbonate represented by the general formula (III). (R ¹ O) CO (OR ² ) (I) R ² OH (II) (R ¹ O) CO (OR ³ ) (III) In the formula, R ¹ represents an alkyl group, cycloalkyl group, arylalkyl group or aryl group which may have a substituent; R ² represents an alkyl group, a cycloalkyl group or an arylalkyl group; R <^3> represents the aryl group which may have a substituent. The ester represented by the following general formula (IV) and the aromatic hydroxy compound represented by the following general formula (II) are exchanged into the liquid phase in the presence of a heterogeneous catalyst containing a micropolyprocess material containing a metal element belonging to group IV. Reacting to obtain an aryl carboxylate represented by the following general formula (V). R ² COOR ⁴ (IV) R ³ OH (II) R ² COOR ³ (V) In which R ² represents an alkyl group, a cycloalkyl group or an arylalkyl group; R ³ represents an aryl group which may have a substituent; R ⁴ represents an alkyl group, a cycloalkyl group or an arylalkyl group. The disproportionation reaction of the alkyl aryl carbonate represented by the following general formula (VI) is carried out by transesterification in the liquid phase in the presence of a heterogeneous catalyst containing a fine polyprocess material containing a metal element belonging to group IV. To obtain a diaryl carbonate represented by the following general formula (VII). (R ² O) CO (OR ³ ) (VI) (R ³ O) CO (OR ³ ) (VII) Wherein R ² represents an alkyl group, a cycloalkyl group or an arylalkyl group; R <^3> represents the aryl group which may have a substituent. In the presence of a heterogeneous catalyst comprising an aryl carboxylate represented by the following general formula (VIII) and a micropolyprocess material containing a metal element belonging to group IV in the carbonate represented by the following general formula (I) Method for producing an aryl carbonate comprising the step of transesterification in the liquid phase to obtain an aryl carbonate represented by the general formula (IX). R ⁵ COOR ⁶ (VIII) (R ¹ O) CO (OR ² ) (I) (R ⁷ O) CO (OR ⁸ ) (IX) In the formula, R ¹ represents an alkyl group, cycloalkyl group, allylalkyl group or allyl group which may have a substituent; R ² represents an alkyl group, a cycloalkyl group or an allylalkyl group; R ⁵ represents an alkyl group, a cycloalkyl group or an arylalkyl group; R ⁶ represents an aryl group which may have a substituent; R ⁷ represents an alkyl group, cycloalkyl group, arylalkyl group or aryl group which may have a substituent; R <^8> represents the aryl group which may have a substituent. A micropolyprocess containing a metal element belonging to Group IV and containing a carbonate represented by the following general formula (I) and an aromatic hydroxy compound represented by the following general formula (II) in the presence of a catalyst A catalyst used in the process comprising the step of transesterification to obtain an aryl carbonate represented by the following general formula (III). (R ¹ O) CO (OR ² ) (I) R ³ OH (II) (R ¹ O) CO (OR ³ ) (III) In the formula, R ¹ represents an alkyl group, cycloalkyl group, arylalkyl group or aryl group which may have a substituent; R ² represents an alkyl group, a cycloalkyl group or an arylalkyl group; R <^3> represents the aryl group which may have a substituent. Esters represented by the following general formula (IV) and aromatic hydroxy compounds represented by the following general formula (II) in a liquid phase in the presence of a catalyst A catalyst used in the method comprising the step of obtaining an aryl carboxylate represented by the following general formula (V) by exchange reaction. R ² COOR ⁴ (IV) R ³ OH (II) R ² COOR ³ (V) In which R ² represents an alkyl group, a cycloalkyl group or an arylalkyl group; R ³ represents an aryl group which may have a substituent; R ⁴ represents an alkyl group, a cycloalkyl group or an arylalkyl group. A disproportionation reaction by transesterification of the alkyl aryl carbonate represented by the following general formula (VI) in a liquid phase in the presence of a catalyst, A catalyst used in a process comprising the step of obtaining a diaryl carbonate represented by the following general formula (VII). (R ² O) CO (OR ³ ) (VI) (R ³ O) CO (OR ³ ) (VII) Wherein R ² represents an alkyl group, a cycloalkyl group or an arylalkyl group; R <^3> represents the aryl group which may have a substituent. An aryl carboxylate comprising a micromultiprocessing material containing a metal element belonging to Group IV, and represented by the following general formula (VIII), the carbonate represented by the following general formula (I) in the presence of a catalyst A catalyst used in the process comprising the step of transesterification to obtain an aryl carbonate represented by the following general formula (IX). R ⁵ COOR ⁶ (VIII) (R ¹ O) CO (OR ² ) (I) (R ⁷ O) CO (OR ⁸ ) (IX) In the formula, R ¹ represents an alkyl group, cycloalkyl group, arylalkyl group or aryl group which may have a substituent; R ² represents an alkyl group, a cycloalkyl group or an arylalkyl group; R ⁵ represents an alkyl group, a cycloalkyl group or an arylalkyl group; R ⁶ represents an aryl group which may have a substituent; R ⁷ represents an alkyl group, cycloalkyl group, arylalkyl group or aryl group which may have a substituent; R <^8> represents the aryl group which may have a substituent. The method according to claim 1, wherein the micromultiprocess material containing a metal element belonging to Group IV is metallosilicate or metalloaluminophosphate. The method according to claim 1, wherein the micromultiprocess material containing a metal element belonging to Group IV is crystalline titanosilicate or crystalline titanoaluminophosphate. The catalyst according to claim 5, wherein the micromultiprocess material containing a metal element belonging to Group IV is metallosilicate or metalloaluminophosphate. 12. The catalyst according to claim 11, wherein the micromultiprocess material containing a metal element belonging to Group IV is crystalline titanosilicate or crystalline titanoaluminophosphate. The method according to claim 2, wherein the micromultiprocess material containing a metal element belonging to Group IV is metallosilicate or metalloaluminophosphate. The method according to claim 13, wherein the micromultiprocess material containing a metal element belonging to Group IV is crystalline titanosilicate or crystalline titanoaluminophosphate. 7. The method according to claim 6, wherein the micromultiprocess material containing a metal element belonging to Group IV is metallosilicate or metalloaluminophosphate. 16. The catalyst according to claim 15, wherein the micromultiprocess material containing a metal element belonging to Group IV is crystalline titanosilicate or crystalline titanoaluminophosphate. The method according to claim 3, wherein the micromultiprocess material containing a metal element belonging to Group IV is metallosilicate or metalloaluminophosphate. 18. The method according to claim 17, wherein the micromultiprocess material containing a metal element belonging to Group IV is crystalline titanosilicate or crystalline titanoaluminophosphate. 8. The catalyst according to claim 7, wherein the micromultiprocess material containing a metal element belonging to Group IV is metallosilicate or metalloaluminophosphate. 20. The catalyst according to claim 19, wherein the micromultiprocess material containing a metal element belonging to Group IV is crystalline titanosilicate or crystalline titanoaluminophosphate. The method according to claim 4, wherein the micromultiprocess material containing a metal element belonging to Group IV is metallosilicate or metalloaluminophosphate. 22. The method of claim 21, wherein the micromultiprocess material containing a metal element belonging to Group IV is crystalline titanosilicate or crystalline titanoaluminophosphate. The catalyst according to claim 8, wherein the micromultiprocess material containing a metal element belonging to Group IV is metallosilicate or metalloaluminophosphate. 24. The catalyst according to claim 23, wherein the micromultiprocess material containing a metal element belonging to Group IV is crystalline titanosilicate or crystalline titanoaluminophosphate. ※ Note: The disclosure is based on the initial application.