The present invention relates to compounds defined by formula (I) wherein the variables R1, R2, R3, m, and n are defined as in claim 1, possessing valuable pharmacological activity. Particularly, the compounds are activators of the receptor GPR40 and thus are suitable for treatment and prevention of diseases which can be influenced by this receptor, such as metabolic diseases, in particular diabetes type 2.
TMSCF
<sub>3</sub>
as a Convenient Source of CF
<sub>2</sub>
=CF
<sub>2</sub>
for Pentafluoroethylation, (Aryloxy)tetrafluoroethylation, and Tetrafluoroethylation
作者:Lingchun Li、Chuanfa Ni、Qiqiang Xie、Mingyou Hu、Fei Wang、Jinbo Hu
DOI:10.1002/anie.201705734
日期:2017.8.7
A new method for the on-site preparation of tetrafluoroethylene (TFE) and a procedure for its efficient use in pentafluoroethylation by fluoride addition were developed by using a simple two-chamber system. The on-site preparation of TFE was accomplished by dimerization of difluorocarbene derived from (trifluoromethyl)trimethylsilane (TMSCF3) under mild conditions. Other fluoroalkylation reactions