JPS5583746A - Preparation of phthalimide derivative - Google Patents

Preparation of phthalimide derivative

Info

Publication number
JPS5583746A
JPS5583746A JP15623778A JP15623778A JPS5583746A JP S5583746 A JPS5583746 A JP S5583746A JP 15623778 A JP15623778 A JP 15623778A JP 15623778 A JP15623778 A JP 15623778A JP S5583746 A JPS5583746 A JP S5583746A
Authority
JP
Japan
Prior art keywords
compound
alkali
earth
pref
halogenated
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
JP15623778A
Other languages
Japanese (ja)
Inventor
Kazuo Kabashima
Fumihiko Yamamoto
Kyugo Tanaka
Teruyuki Misumi
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.)
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co Ltd
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 Asahi Chemical Industry Co Ltd filed Critical Asahi Chemical Industry Co Ltd
Priority to JP15623778A priority Critical patent/JPS5583746A/en
Publication of JPS5583746A publication Critical patent/JPS5583746A/en
Pending legal-status Critical Current

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  • Indole Compounds (AREA)

Abstract

PURPOSE: To prepare a 3-imino-halogenated isoindolin-1-one which is an intermediate of a pigment having excellent color fastness to daylight exposure and heat resistance, by reacting a halogenated phthalodinitrile with an aqueous solution of an alkali(ne earth) metal hydroxide.
CONSTITUTION: A compound of formula II is prepared by reacting a compound I (X1W4 are H or halogen, provided that at least two of them are halogen) with ≥2N aqueous solution of an alkali(ne earth) metal hydroxide. The amount of the alkali(ne earth) hydroxide is pref. more than equivalent to the compound I, and the concentration is pref. ≥4N, esp. ≥8N to prevent the hydrolysis of the produced compound II, and to obtain the objective compound II almost quantitatively, in high yield.
EFFECT: Since the reaction is carried out without using an organic solvent, the process can be simplified and made economical.
COPYRIGHT: (C)1980,JPO&Japio
JP15623778A 1978-12-20 1978-12-20 Preparation of phthalimide derivative Pending JPS5583746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15623778A JPS5583746A (en) 1978-12-20 1978-12-20 Preparation of phthalimide derivative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15623778A JPS5583746A (en) 1978-12-20 1978-12-20 Preparation of phthalimide derivative

Publications (1)

Publication Number Publication Date
JPS5583746A true JPS5583746A (en) 1980-06-24

Family

ID=15623361

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15623778A Pending JPS5583746A (en) 1978-12-20 1978-12-20 Preparation of phthalimide derivative

Country Status (1)

Country Link
JP (1) JPS5583746A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5111626A (en) * 1974-07-20 1976-01-29 Mitsui Miike Machinery Co Ltd GANSEKIHAKURIKUTSUSHINSOCHI

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5111626A (en) * 1974-07-20 1976-01-29 Mitsui Miike Machinery Co Ltd GANSEKIHAKURIKUTSUSHINSOCHI

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