Pyridin-2-yl guanidine derivatives: conformational control induced by intramolecular hydrogen-bonding interactions.
Kelly B, O'Donovan DH, O'Brien J, McCabe T, Blanco F, Rozas I. Pyridin-2-yl guanidine derivatives: conformational control induced by intramolecular hydrogen-bonding interactions. J Org Chem. 2011 Nov 18; 76(22):9216-27.