79991-26-7Relevant academic research and scientific papers
Structure of 1,6-Bis(p-chlorophenyl)-3,4-diacetyl-1,5-hexazadiene: A Compound with a Highly Electrophilic N-Acetyl Group
Mackay, Donald,McIntyre, Deane D.,Taylor, Nicholas J.
, p. 532 - 535 (1982)
The crystal structure of title compound (1) shows it to consist of two planar halves, related by C2 symmetry, in which an extremely long N to acetyl bond (1.403 Angstroem) and a short carbonyl bond (1.200 Angstroem) are the most striking features.These bond lengths, and unusually high carbonyl stretching frequency (1755, 1742 cm-1), point to strong electrophilic character in the acetyl group of 1.Acetylation by 1 of variety of aliphatic amines occurs cleanly and with a selectivity which is based on both steric factors and amine basicity.Acetates are formed from alkoxides or phenoxides.
