Title:
ニトロ化方法
Document Type and Number:
Japanese Patent JP4047932
Kind Code:
B2
Abstract:
A process for the nitration of an aromatic or heteroaromatic compound with a nitrating agent comprising nitric acid or a mixture of nitric and sulphuric acids, characterised in that nitration is performed in a solvent comprising at least 50% v/v of a C1-C6 alkyl ester of a C1-C4 carboxylic acid. The process is of particular use for the nitration of diphenyl ethers to give compounds which are useful as herbicides or as intermediates in the synthesis of herbicides.
Inventors:
Brown, Stephen Martin
Max Worthy, James Peter
Lennon, Martin
Atherton, John Heathcote
Place Tray, Ian Jeffrey Grassum
Max Worthy, James Peter
Lennon, Martin
Atherton, John Heathcote
Place Tray, Ian Jeffrey Grassum
Application Number:
JP52112498A
Publication Date:
February 13, 2008
Filing Date:
October 28, 1997
Export Citation:
Assignee:
Syngenta Limited
International Classes:
C07C201/08; C07B43/02; C07C205/38; C07C205/59; C07C231/12; C07C235/44; C07C303/40; C07C311/51
Domestic Patent References:
| JP7061953A | ||||
| JP2028140A |
Foreign References:
| US2435314 |
Attorney, Agent or Firm:
Kazuo Shamoto
Shosuke Imai
Tadashi Masui
Tadahiko Kurita
Yasushi Kobayashi
Makoto Aihara
Shosuke Imai
Tadashi Masui
Tadahiko Kurita
Yasushi Kobayashi
Makoto Aihara