Selective one-pot synthesis of aminopolyhalobenzonitriles from polyhalobenzotrichlorides in anhydrous ammonia
作者:Tamara A. Vaganova、Vladimir I. Rodionov、Igor P. Chuikov、Ekaterina A. Chochrina、Evgenij V. Malykhin
DOI:10.1016/j.jfluchem.2017.06.005
日期:2017.8
Polyhalogenated benzotrichlorides (pentafluoro-, chlorotetrafluoro-, chlorotrifluoro-, and tetrafluorobenzotrichlorides) undergo one-pot ammonolysis + aminodefluorination by the action of anhydrous ammonia to form mono- and diamino derivatives of polyhalobenzonitriles. For the substrates comprising halogen at the para-position, the ammonolysis of the CCl3 group and the first aminodefluorination occur
Process for preparing nucleus-halogenated benzoyl chlorides
申请人:Bayer Aktiengesellschaft
公开号:US05840975A1
公开(公告)日:1998-11-24
Ring-halogenated benzoyl chlorides are obtained in a particularly advantageous manner if ring-halogenated benzotrichlorides are reacted with formic acid in the presence of iron salts.
[DE] VERFAHREN ZUR HERSTELLUNG VON KERNHALOGENIERTEN BENZOYLCHLORIDEN<br/>[EN] PROCESS FOR PREPARING NUCLEUS-HALOGENATED BENZOYL CHLORIDES<br/>[FR] PROCEDE DE PREPARATION DE CHLORURES DE BENZOYLE HALOGENES AU NOYAU
申请人:BAYER AKTIENGESELLSCHAFT
公开号:WO1996023758A1
公开(公告)日:1996-08-08
(DE) Kernhalogenierte Benzoylchloride werden in besonders vorteilhafter Weise erhalten, wenn man kernhalogenierte Benzotrichloride mit Ameisensäure in Gegenwart von Eisensalzen umsetzt.(EN) Nucleus-halogenated benzoyl chlorides are obtained in a particularly advantageous manner by reacting nucleus-halogenated benzotrichlorides with formic acid in the presence of iron salts.(FR) On obtient de manière particulièrement avantageuse des chlorures de benzoyle halogénés au noyau en faisant réagir des chlorures de benzényle halogénés au noyau avec de l'acide formique en présence de sels de fer.