115957-60-3Relevant articles and documents
HYDROGEN BONDS IN N-(3-CHLORO-2-BENZOTHIENOCARBONYL)- AND N-(2-BENZOTHIENOCARBONYL)-N'-MONOSUBSTITUTED THIOUREAS
Hritzova, Olga,Kutschy, Peter,Imrich, Jan,Schoeffmann, Thomas
, p. 2673 - 2679 (2007/10/02)
N-(3-Chloro-2-benzothienocarbonyl)-N'-monosubstituted thiourea derivatives undergo photocyclizations with lower yields than those obtained from analogous N',N'-disubstituted derivatives.This decreased reactivity is caused by the existence of a six-membered cyclic form with the very strong hydrogen bond NH...O=C.The possibility of formation of various conformers has been found with N-(2-benzothienocarbonyl)-N'-monosubstituted thiourea derivatives as a consequence of the rotation around the C(2)-C(O) connecting line.
