Crystal structures and properties of mutagenic N-acyloxy-N-alkoxyamides — “most pyramidal” acyclic amides
作者:Ashley-Mae E. Gillson、Stephen A. Glover、David J. Tucker、Peter Turner
DOI:10.1039/b306098p
日期:——
degrees and [chiN] of 66 degrees and 65 degrees. The sp3 nature of nitrogen results in negligible amide resonance as evidenced by long N-C(O) bonds, high IR carbonyl stretch frequencies, carbonyl 13C NMR data and very low amide isomerisationbarriers. In addition, conformations in the solid state support a strong n(O)-sigma*(NOAc), anomeric interaction as predicted by molecular orbital theory. HF/6-31G*