A method for the preparation of benzenamines comprising reacting hydrogen fluoride with a phenyl carbamic fluoride, to form a benzenamine hydrofluoride complex; dissociating the complex and recovering the benzenamine. The phenyl carbamic fluoride may be prepared in situ by the reaction of hydrogen fluoride with a phenyl isocyanate.
Novel process for the preparation of a synthetic intermediate for pesticides
申请人:Buathier Bernard
公开号:US20060142614A1
公开(公告)日:2006-06-29
Process for the preparation of a compound of general formula (I):
in which X represents a halogen atom,
by reaction of para-trifluoromethylaniline of formula (II):
with a dihalogen X
2
,
the two compounds being introduced simultaneously into a polar aprotic solvent in a dihalogen/compound (II) molar ratio ranging from 1.9 to 2.5 and at a temperature ranging from 100 to 300° C.
通式(I)化合物的制备工艺:
其中 X 代表卤素原子、
式(II)的对三氟甲基苯胺与二卤素 X 反应
与二卤素 X
2
,
将这两种化合物同时引入极性壬烷溶剂中,二卤素/化合物(II)摩尔比为 1.9 至 2.5,温度为 100 至 300 摄氏度。
N-Fluoroalkylamines. I. Difluoroazomethines
作者:William A. Sheppard
DOI:10.1021/ja00947a021
日期:1965.10
Verfahren zur Herstellung von Trifluormethylanilinen
申请人:HOECHST AKTIENGESELLSCHAFT
公开号:EP0639556B1
公开(公告)日:1997-03-05
PROCESS FOR THE PREPARATION OF 2,6-DIHALO-PARA-TRIFLUOROMETHYLANILINE