electrophilic fluorination造句

• Although the precise mechanism of electrophilic fluorination is currently unclear, highly efficient and stereoselective methods have been developed.
• Electrophilic fluorination offers an alternative to nucleophilic fluorination methods employing alkali or ammonium fluorides and methods employing sulfur fluorides for the preparation of organofluorine compounds.
• The use of salts of cationic nitrogen increases the rates and yields of electrophilic fluorination, because the cationic nitrogen removes electron density from fluorine.
• Development of electrophilic fluorination reagents has always focused on removing electron density from the atom attached to fluorine; however, compounds containing nitrogen-fluorine bonds have proven to be the most economical, stable, and safe electrophilic fluorinating agents.
• This new work . . . holds out the tantalizing possibility of using PET scans to peer into a number of functions inside animals and humans by simplifying the process of using  tracer molecules to create the 3-D images . " ( by creating a novel electrophilic fluorination reagent as an intermediate molecule; the research could be used in drug development ).