作者:Graham Sandford、Jessica Breen、Bhairavi Patel、Jonathan Fray
DOI:10.1055/s-0034-1378915
日期:——
Fluorination of 3,5-diarylpyrazole substrates by Selectfluor (TM) in acetonitrile gave 4,4-difluoro-1H-pyrazoles in addition to 4-fluoropyrazole derivatives. The structure of this new class of fluorinated heterocycle was established by X-ray crystallography.