JPS5622743A - Preparation of 2-hydroxy-4-alkoxybenzophenones - Google Patents

Preparation of 2-hydroxy-4-alkoxybenzophenones

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Publication number
JPS5622743A
JPS5622743A JP9891179A JP9891179A JPS5622743A JP S5622743 A JPS5622743 A JP S5622743A JP 9891179 A JP9891179 A JP 9891179A JP 9891179 A JP9891179 A JP 9891179A JP S5622743 A JPS5622743 A JP S5622743A
Authority
JP
Japan
Prior art keywords
ether
propylene glycol
alkyl
glycol alkyl
dihydroxybenzophenone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9891179A
Other languages
Japanese (ja)
Inventor
Kaichiro Aoyama
Tomizo Fujino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHIPURO KASEI KK
Original Assignee
SHIPURO KASEI KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHIPURO KASEI KK filed Critical SHIPURO KASEI KK
Priority to JP9891179A priority Critical patent/JPS5622743A/en
Publication of JPS5622743A publication Critical patent/JPS5622743A/en
Pending legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: To prepare the titled compound in high reaction rate and yield, by reacting a 2,4-dihydroxybenzophenone with an alkyl halide in the presence of an alkali, using propylene glycol alkyl ether as a solvent.
CONSTITUTION: The objective compound is prepared by reacting a 2,4-dihydroxybenzophenone with an alkyl halide such as n-octyl chloride, in the presence of an alkali, pref. a mixture of sodium carbonate and sodium bicarbonate, in a solvent comprising a propylene glycol alkyl ether, at 100W150°C, and distilling off the generated water and carbon dioxide from the system as much as possible. The propylene glycol alkyl ether is, pref. the one having a 1W4C alkyl, such as methyl ether, ethyl ether, propyl ether, etc. If necessary, a metal bromide or iodide can be incorporated in the reaction system as a reaction accelerator.
USE: Light stabilizer for various resins.
COPYRIGHT: (C)1981,JPO&Japio
JP9891179A 1979-08-01 1979-08-01 Preparation of 2-hydroxy-4-alkoxybenzophenones Pending JPS5622743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9891179A JPS5622743A (en) 1979-08-01 1979-08-01 Preparation of 2-hydroxy-4-alkoxybenzophenones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9891179A JPS5622743A (en) 1979-08-01 1979-08-01 Preparation of 2-hydroxy-4-alkoxybenzophenones

Publications (1)

Publication Number Publication Date
JPS5622743A true JPS5622743A (en) 1981-03-03

Family

ID=14232307

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9891179A Pending JPS5622743A (en) 1979-08-01 1979-08-01 Preparation of 2-hydroxy-4-alkoxybenzophenones

Country Status (1)

Country Link
JP (1) JPS5622743A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102531872A (en) * 2011-12-31 2012-07-04 金坛市春风化工有限公司 Method for preparing high purity (99.9 percent) 4,4'-difluorobenzophenone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102531872A (en) * 2011-12-31 2012-07-04 金坛市春风化工有限公司 Method for preparing high purity (99.9 percent) 4,4'-difluorobenzophenone

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