Spin-saturation transfer in an exchanging system: 4-Hydroxycyclopent-2-en-1-ones

Abstract

P.m.r. studies of the substituted 4-hydroxycyclopent-2-en-1-ones (1a-d) in acetone solution show the presence of two slowly interconverting species which correspond to free and hydrogen-bonded forms of these compounds. Double resonance experiments show the transfer of spin saturation between solute molecules in these different environments.