In the nmr spectral of p-formamidophenol, i was suppose to have two distinct singlet, but kept having doublet, for a single aromatic proton?

Looking at the nmr spectrum of p-formamidophenol, the two aromatic protons bearing the OH and NH functional group appeared doublet each instead of singlet. Pls what could be responsible for this?

12 March 2021 5,108 2 View