Chemically induced dynamic nuclear polarization in the photo-reactions of 4-diazocyclohexa-2,5-dienones
Abstract
Photolysis of 4-diazocyclohexa-2,5-dienones gives rise to CIDNP spectra indicating that cyclohexadienone carbene reacts in a singlet state, whereas its di-t-butyl derivative reacts as a triplet.