Use of fluoroform as a source of difluorocarbene in the synthesis of N -CF 2 H heterocycles and difluoromethoxypyridines
摘要:
Fluoroform is used as a source of difluorocarbene to convert various N-, O-, and C-nucleophiles to their difluoromethylated derivatives. Imidazole, benzimidazole, benztriazole, hydroxypyridines, and their derivatives underwent reaction at moderate temperatures and atmospheric pressure, using potassium hydroxide as base in a two-phase (water/acetonitrile) process to provide moderate to good yields of the respective products. Nitrophenols required addition of a co-solvent (methanol) to obtain good yields of products. (C) 2014 Elsevier B.V. All rights reserved.
exhibited a linear relationship and a reaction parameter (ρ)=+0.56±0.02, which indicated that the trifluoromethylation reaction proceeded via a nucleophilic reactive species. Complex 2 reacts with phenols to produce aryl difluoromethyl ethers in modest‐to‐excellent yields. Mechanisticinvestigations revealed that the difluoromethylation reaction proceeds by initial copper‐mediated formation of difluorocarbene
Oxadiazolopyridine Derivates for Use as Ghrelin O-Acyl Transferase (GOAT) Inhibitors
申请人:Boehringer Ingelheim International GmbH
公开号:US20180037594A1
公开(公告)日:2018-02-08
The present invention relates to compounds of general formula I,
wherein the groups R
1
, R
2
and n are defined as in claim
1
, which have valuable pharmacological properties, in particular bind to ghrelin O-acyl transferase (GOAT) and modulate its activity. The compounds are suitable for treatment and prevention of diseases which can be influenced by this receptor, such as metabolic diseases, in particular obesity.
[EN] NEW INDANYLOXYDIHYDROBENZOFURANYLACETIC ACIDS<br/>[FR] NOUVEAUX ACIDES INDANYLOXYDIHYDROBENZOFURANYLACÉTIQUES
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2014082918A1
公开(公告)日:2014-06-05
The present invention relates to compounds of general formula (I), wherein the group (Het)Ar is defined as in claim 1, which have valuable pharmacological properties, in particular bind to the GPR40 receptor and modulate its activity. The compounds are suitable for treatment and prevention of diseases which can be influenced by this receptor, such as metabolic diseases, in particular diabetes type 2.
The present invention relates to compounds of general formula I,
wherein the group (Het)Ar is defined as in claim
1
, which have valuable pharmacological properties, in particular bind to the GPR40 receptor and modulate its activity. The compounds are suitable for treatment and prevention of diseases which can be influenced by this receptor, such as metabolic diseases, in particular diabetes type 2.
Tri- and difluoromethoxylated N-based heterocycles − Synthesis and insecticidal activity of novel F3CO- and F2HCO-analogues of Imidacloprid and Thiacloprid
作者:Gregory Landelle、Etienne Schmitt、Armen Panossian、Jean-Pierre Vors、Sergiy Pazenok、Peter Jeschke、Oliver Gutbrod、Frédéric R. Leroux
DOI:10.1016/j.jfluchem.2017.08.006
日期:2017.11
The preparation of F3CO- and F2HCO-analogues of Imidacloprid and Thiacloprid and the evaluation of their biological activity have been performed. For this purpose, a first synthetic approach allowed the preparation of a desired F3CO-containing key intermediate. To allow a facile access to the second F2HCO-containing key intermediate, the difluoromethylation of hydroxylated N-based heterocycles has