Frustrated Lewis-Pair-Meditated Selective Single Fluoride Substitution in Trifluoromethyl Groups
作者:Dipendu Mandal、Richa Gupta、Amit K. Jaiswal、Rowan D. Young
DOI:10.1021/jacs.9b12167
日期:2020.2.5
developed a generic protocol that allows a single substitution of one fluoride in trifluoromethylgroups with neutral phosphine and pyridine bases. The resulting phosphonium and pyridinium salts can be further functionalized via nucleophilic substitution, photoredox coupling and electrophilic transfer reactions allowing the generation of a vast array of difluoromethyl products.
Iron‐Catalyzed Halogen Exchange of Trifluoromethyl Arenes**
作者:Andreas Dorian、Emily J. Landgreen、Hayley R. Petras、James J. Shepherd、Florence J. Williams
DOI:10.1002/chem.202101324
日期:2021.7.26
using catalytic iron(III)halides is reported, which constitutes the first iron-catalyzed halogen exchange for non-aromatic C−F bonds. Theoretical calculations suggest direct activation of C−F bonds by iron coordination. ArCX3 and ArCF2X products of the reaction are synthetically valuable due to their diversification potential. In particular, chloro- and bromodifluoromethyl arenes (ArCF2Cl, ArCF2Br respectively)
Fluoroform synthesis and uses thereof in the preparation of trifluoromethylated compounds
申请人:Institut National des Sciences
Appliquées de Rouen (INSA)
公开号:EP2784055A1
公开(公告)日:2014-10-01
The present invention relates to a process to prepare fluoroform (CHF3), notably radio labelled with fluorine-18, comprising a substitution reaction between CHAF2 and a fluoride salt,
wherein A represents
or
as well as a process to prepare a composition comprising copper-based or silver-based trifluoromethylated reagents using notably the fluoroform thus prepared and the use of a composition comprising copper-based trifluoromethylated reagents or a mixture comprising a copper salt and a composition comprising silver-based trifluoromethylated reagents as a trifluoromethylating agent, notably radio labelled with fluorine-18.
[EN] C-ARYL GLYCOSIDE COMPOUNDS FOR THE TREATMENT OF DIABETES AND OBESITY<br/>[FR] COMPOSÉS C-ARYL GLYCOSIDES POUR LE TRAITEMENT DU DIABÈTE ET DE L'OBÉSITÉ
申请人:TFCHEM
公开号:WO2009121939A3
公开(公告)日:2010-11-11
HAAS, ALOIS;SPITZER, MARTIN;LIEB, MAX, CHEM. BER., 121,(1988) N 7, 1329-1340