338404-89-0Relevant academic research and scientific papers
Synthesis and crystal structures of methyl 3-(benzoylamino)-6-methyl-2-oxo- 2H-pyran-5-carboxylate and N-[5-(3,4-dimethoxyphenyl)-6-methyl-2-oxo-2H-pyran-3- yl]benzamide
Kranjc, Kristof,Juranovic, Amadej,Kocevar, Marijan,Perdih, Franc
, p. 443 - 449 (2012)
The compounds methyl 3-(benzoylamino)-6-methyl-2-oxo-2H-pyran-5-carboxylate (1), C15H13NO5, and N-[5-(3,4-dimethoxyphenyl) -6-methyl-2-oxo-2H-pyran-3-yl] benzamide (2), C21H 19NO5, crystallize as a centrosymmetric hydrogen-bonded dimer facilitated by N-H...O interactions involving the amide and carbonyl moiety of the lactone group of adjacent molecules. Supramolecular aggregation in 1 is controlled by a combination of π...π interactions [centroid-centroid distance = 4.0745(11) A] and weak C-H...O hydrogen bonding between the phenyl ring of the benzoylamino group and the carbonyl atom of the methoxycarbonyl group and in 2 by a combination of π...π interactions [centroid-centroid distance = 4.0699(8) and 4.1556(10) A], weak C-H...O interactions between the methoxy substituents of the adjacent dimethoxyphenyl group and weak C-H... π interactions. Springer Science+Business Media, LLC 2012.
