Tetrahedron

Conformational studies by dynamic NMR—VI: Torsional barriers in 5-membered heteroaromatic carbamides and thiocarbamides

F Bernardi, L Lunazzi, P Zanirato

文献索引：Bernardi,F. et al. Tetrahedron, 1977 , vol. 33, p. 1337 - 1343

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被引用次数: 35

摘要

Thermodynamie parameters involved in the rotation of the partial CN double bond in a series of 5-membered heteroaromatic N, N-dimethyl-carbamides and-thiocarbamides have been measured by total line shape (TLS) analysis of their NMR. Lanthanide induced shift (LIS) has been applied in two cases to determine the conformation of the CO moiety with respect to the heteroatom. The energy barriers of thiazolyl carbamides and ...