Title:
2,3,4,5-テトラフルオロベンゾトリフルオライドの製造方法
Document Type and Number:
Japanese Patent JP3572096
Kind Code:
B2
Abstract:
Prepn. of polyhalobenzoyl chlorides of formula (III) comprises partial hydrolysis of the corresp. benzotrichloride derivs. of formula (II) in presence of ferric chloride. Also claimed is the prepn. of (II) by reacting benzotrifluoride derivs. of formula (I) with a chloride of Friedel-Crafts catalyst type. Prepn. of (III) from (I) via (II) by a combination of the two processes is also claimed. X = Cl or F; Y = H or F, Cpds. (II) and (III); Y = H) are new. In prepn. of (II), the chloride is AlCl3, TiCl4, SbCl5 or BCl3. Prepn. of (III) is effected in presence of 0.9-1.05 mol. water and 0.1-10 wt.% FeCl3, both based on (II).
Inventors:
Albrecht Malholt
Peter Andres
Peter Andres
Application Number:
JP1409894A
Publication Date:
September 29, 2004
Filing Date:
January 13, 1994
Export Citation:
Assignee:
Bayer Aktiengesellschaft
International Classes:
C07B61/00; A23K20/195; B01J27/10; B01J27/12; B01J27/128; C07C17/12; C07C17/158; C07C17/20; C07C17/32; C07C25/13; C07C51/093; C07C51/58; C07C63/10; C07C63/70; C07D401/04; (IPC1-7): C07C63/70; C07B61/00; C07C17/20; C07C25/13; C07C51/58
Domestic Patent References:
| JP150832A | ||||
| JP62289534A | ||||
| JP6310739A | ||||
| JP62108839A |
Attorney, Agent or Firm:
Heikichi Odashima