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JPS55162735A - M- dihalomethyl benzophenone - Google Patents

M- dihalomethyl benzophenone

Info

Publication number
JPS55162735A
JPS55162735A JP6987279A JP6987279A JPS55162735A JP S55162735 A JPS55162735 A JP S55162735A JP 6987279 A JP6987279 A JP 6987279A JP 6987279 A JP6987279 A JP 6987279A JP S55162735 A JPS55162735 A JP S55162735A
Authority
JP
Japan
Prior art keywords
formula
benzophenone
compound
dihalomethyl
ketoprofen
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.)
Granted
Application number
JP6987279A
Other languages
Japanese (ja)
Other versions
JPS6155492B2 (en
Inventor
Genichi Dobashi
Shuichi Mitamura
Katsuyuki Ogura
Isao Hashiba
Kazutaka Arai
Kazuo Endo
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.)
Nissan Chemical Corp
Sagami Chemical Research Institute
Original Assignee
Nissan Chemical Corp
Sagami Chemical Research Institute
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 Nissan Chemical Corp, Sagami Chemical Research Institute filed Critical Nissan Chemical Corp
Priority to JP6987279A priority Critical patent/JPS55162735A/en
Publication of JPS55162735A publication Critical patent/JPS55162735A/en
Publication of JPS6155492B2 publication Critical patent/JPS6155492B2/ja
Granted legal-status Critical Current

Links

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

Abstract

NEW MATERIAL:An m-(dihalomethyl)benzophenone of formula I (X is halogen).
EXAMPLE: m-(Dibromomethyl)benzophenone.
USE: A precursor for the safe and high yield preparation of ketoprofen which is a medicine having antiphlogistic and analogesic activities.
PROCESS: The compound of formula I is prepared by reacting 1 equivalent of m- benzoyltoluene of formula II with 1.5W3.0 equivalent of a halogenating agent, in the presence of a radical initiator such as benzoyl peroxide, azobisisobutyronitrile, etc, pref. in a solvent such as benzene, under heating or light-irradiation. The starting compound of formula II can be obtained easily by the Friedel-Crafts reaction of m-toluoyl chloride with benzene. Ketoprofen is prepared from m-benzoylbenzaldehyde which is the hydrolyzed product of the compound of formula I, by reacting successively with formaldehyde mercaptal S-oxide, etc.
COPYRIGHT: (C)1980,JPO&Japio
JP6987279A 1979-06-06 1979-06-06 M- dihalomethyl benzophenone Granted JPS55162735A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6987279A JPS55162735A (en) 1979-06-06 1979-06-06 M- dihalomethyl benzophenone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6987279A JPS55162735A (en) 1979-06-06 1979-06-06 M- dihalomethyl benzophenone

Publications (2)

Publication Number Publication Date
JPS55162735A true JPS55162735A (en) 1980-12-18
JPS6155492B2 JPS6155492B2 (en) 1986-11-28

Family

ID=13415305

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6987279A Granted JPS55162735A (en) 1979-06-06 1979-06-06 M- dihalomethyl benzophenone

Country Status (1)

Country Link
JP (1) JPS55162735A (en)

Also Published As

Publication number Publication date
JPS6155492B2 (en) 1986-11-28

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