Title:
PROCESS FOR PRODUCING 2,5-BIS(TRIFLUOROMETHYL)NITROBENZENE
Document Type and Number:
WIPO Patent Application WO/2003/062187
Kind Code:
A1
Abstract:
A process by which 2,5-bis(trifluoromethyl)nitrobenzene can be produced from an industrially easily available material in high yield through a small number of steps under mild reaction conditions using an easily handleable substance with which the reaction operation is easy. 1,4-Bis(trifluoromethyl)benzene is nitrated with nitric acid in a solvent comprising as an essential ingredient an acid selected between sulfuric acid having a sulfuric acid concentration of 91 to 100 wt.% and fuming sulfuric acid having a sulfur trioxide concentration higher than 0 wt.% and not higher than 20 wt.%.
Inventors:
SHIMIZU TAMAKI (JP)
Application Number:
PCT/JP2003/000660
Publication Date:
July 31, 2003
Filing Date:
January 24, 2003
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
SHIMIZU TAMAKI (JP)
SHIMIZU TAMAKI (JP)
International Classes:
C07C201/08; C07C205/11; C07J73/00; C07J75/00; (IPC1-7): C07C201/08; C07C205/11; C07J73/00; C07J75/00
Foreign References:
| JPH0931030A | 1997-02-04 | |||
| US5565467A | 1996-10-15 |
Other References:
YATES K. ET AL.: "A critical test of the Hammett acidity function", CANADIAN JOURNAL OF CHEMISTRY, vol. 50, no. 4, 1972, pages 581 - 583, XP002967660
See also references of EP 1468983A4
See also references of EP 1468983A4
Attorney, Agent or Firm:
Senmyo, Kenji (38 Kanda-Higashimatsushitach, Chiyoda-ku Tokyo, JP)
Download PDF: