Metal complexes of the perfluoroalkyl substituted ligand
作者:Wayne A. King、Glenn P.A. Yap、Christopher D. Incarvito、Arnold L. Rheingold、Klaus H. Theopold
DOI:10.1016/j.ica.2009.04.013
日期:2009.9
The synthesis of the perfluoroalkyl substituted tris(pyrazolyl)borate ligand Tpn-C3F7,MeTpn-C3F7,Me (tris(3-(1,1,2,2,3,3,3-heptafluoropropyl)-5-methyl-pyrazolyl)borate) is reported. Its Tl, Na, and Cs salts as well as a series of transition metal complexes of the type Tpn-C3F7,MeTpn-C3F7,Me MIINO3 (M = Mn, Co, Ni, Cu, Zn) and the carbonyl complex Tpn-C3F7,MeTpn-C3F7,Me Cu(CO) have been prepared and
Ambident polyfluoroalkyl-substituted pyrazoles in the methylation reactions
作者:Anna E. Ivanova、Yanina V. Burgart、Viktor I. Saloutin、Pavel A. Slepukhin、Sophia S. Borisevich、Sergey L. Khursan
DOI:10.1016/j.jfluchem.2017.01.009
日期:2017.3
good regioselectivity in the methylation of polyfluoroalkylpyrazoles was reached while varying the reaction conditions. Under basic conditions, methylation of such pyrazoles led to the preferred formation of 3-RF-pyrazoles, whereas the use of dimethyl sulfate in the absence of a base resulted in the predominant formation of 5-RF-pyrazoles. A proposed mechanism of methylation was discussed.