Facile synthetic pathway to β-hydroxy-β-trifluoromethyl imines and their derivatives
摘要:
Synthetic approach based on mediated addition of different trifluoromethylated building blocks to selected acyclic imines giving access to a variety of beta-hydroxy-beta-trifluoromethyl imines are elaborated. A reaction between fluorinated adducts and imines proceed easily giving the condensation products in good to excellent yields. beta-Hydroxy-beta-trifluoromethyl imines possessing trifluoromethyl group and exhibiting strong intramolecular hydrogen bonding are great precursors to different beta-hydroxy-beta-trifluoromethyl ketones and alcohols. (C) 2009 Elsevier B.V. All rights reserved.
[EN] PROCESS FOR PREPARING 3,5-BIS(HALOALKYL)PYRAZOLE DERIVATIVES FROM α,α-DIHALOAMINES AND KETIMINES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE DÉRIVÉS DE 3,5-BIS(HALOALKYL)PYRAZOLE À PARTIR D'Α,Α-DIHALOAMINES ET DE CÉTIMINES
申请人:BAYER CROPSCIENCE AG
公开号:WO2015144578A1
公开(公告)日:2015-10-01
Process for preparine3,5-bis(haloalkyl)pyrazolederivatives from a,a-dihaloamines and ketimines The present invention relates to a novel process for preparing 3,5-bis(haloalkyl)pyrazole derivatives from a,a-dihaloamines and ketimines. Intermedaites used in the process are also claimed.
[EN] PROCESS FOR PREPARING 3,5-BIS(HALOALKYL)PYRAZOLES VIA ACYLATION OF KETIMINES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE 3,5-BIS (HALOALKYL) PYRAZOLES PAR ACYLATION DE CÉTIMINES
申请人:BAYER CROPSCIENCE AG
公开号:WO2015189138A1
公开(公告)日:2015-12-17
The present invention relates to a novel process for preparing 3,5-bis(haloalkyl)pyrazole derivatives of the formula (Ia) and (Ib), via acylation of ketimines.