【発明の名称】O-フエニレンジアミンの製造方法 - MAGIAA ASUBANYORAI E FUERUTOGATSU KISERURECHI INTEZE

Title:

【発明の名称】O-フエニレンジアミンの製造方法

Document Type and Number:

Japanese Patent JPS5822100

Kind Code:

B2

Abstract:

The invention relates to a process for preparing o-phenylenediamine. According to the invention 1,4-dichlorobenzene is nitrated to give 2,5-dichloro-nitrobenzene which is then reacted with an aqueous ammonium hydroxide solution and the 4-chloro-2-nitraniline obtained is subjected to catalytic hydrogenation to afford the end product which can thereafter be separated. The process according to the invention can be accomplished with a total yield of about 90% related to the 1,4-dichlorobenzene starting compound. o-Phenylenediamine is a valuable intermediate for instance in the synthesis of plant protecting agents and heat-resistant polymers.

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Inventors:

REZUSO KUSHIKOSU
ZORUTAN DEKUSHII
ZENO TOROKUSANII
ZUSORUTO BARUGA
ZUSUZUSA UITSUTOMAN

Application Number:

JP9812478A

Publication Date:

May 06, 1983

Filing Date:

August 11, 1978

Export Citation:

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Assignee:

MAGIAA ASUBANYORAI E FUERUTOGATSU KISERURECHI INTEZE

International Classes:

C07B61/00; B01J21/00; B01J23/00; B01J25/00; C07C37/58; C07C67/00; C07C209/00; C07C209/06; C07C209/36; C07C211/51; (IPC1-7): C07C87/58; C07C85/11

Attorney, Agent or Firm:

Asamura Akira

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