Acetal-alkyne long-range coupling
= Acetal-alkyne long-range coupling
<Proton> coupling across H-C-C≡C-H can resolve a small four-bond splitting. In a propargyl <acetal> this connects the <acetal> methine and terminal <alkyne> <proton>.
= Acetal-alkyne long-range coupling
<Proton> coupling across H-C-C≡C-H can resolve a small four-bond splitting. In a propargyl <acetal> this connects the <acetal> methine and terminal <alkyne> <proton>.