e.g. Filippa Pettersson or Cancer Res. 75(6) , 1102-12, (2015) or 10.1002/anie.201600521
Gem-difluorination of aminoalkynes via highly reactive dicationic species in superacid HF-SbF5: application to the efficient synthesis of difluorinated cinchona alkaloid …
AC Cantet, H Carreyre, JP Gesson…
Index: Journal of Organic Chemistry, , vol. 73, # 7 p. 2875 - 2878