Abstract
Heterocyclic systems 3-furoxanyl, 4-furoxanyl and 3-furazanyl have been characterised as substituents by their substituent constants σm, σp, σI and σR, determined from pK and 19F NMR shifts: they are strongly electron attracting but weakly conjugated.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have