Title:
アミノベンゾピラン化合物の製造方法
Document Type and Number:
Japanese Patent JP4569755
Kind Code:
B2
Abstract:
There is provided a method for producing aminobenzopyran compound, which results in little wastes, has no influence on reactors and necessitates a simple work-up procedure. Concretely, it is a method for producing aminobenzopyran compound of formula (2) characterized by reducing a nitro group on 2,2-dimethyl 2H-1-benzopyran compound of formula (1) with hydrazine in the presence of a metal catalyst.
Inventors:
Takanori Shimizu
Hiroo Matsumoto
Hiroo Matsumoto
Application Number:
JP2004532686A
Publication Date:
October 27, 2010
Filing Date:
August 06, 2003
Export Citation:
Assignee:
Nissan Chemical Industry Co., Ltd.
International Classes:
C07D311/70; C07D311/58; C07B61/00
Domestic Patent References:
| JPH04290876A | 1992-10-15 | |||
| JPH0578289A | 1993-03-30 |
Foreign References:
| GB1121307A | 1968-07-24 | |||
| WO2001085671A2 | 2001-11-15 |
Attorney, Agent or Firm:
Calyx
Kyoko Oyama
Toshio Nakamura
Miyazaki Yoshio
Tsutomu Kato
Kyoko Oyama
Toshio Nakamura
Miyazaki Yoshio
Tsutomu Kato