Polymorph(ii) of Methyl 3-(4-ethoxy-alpha-hydroxyiminobenzyl)-1,2,2-trimethylcyclopentanecarboxylate
(1995) Acta Crystallographica. Section C: Crystal Structure Communications — Vol. 51, p. 322-324 (1995)
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- Abstract
- The title compound, C19H27NO4, is an intermediate product in the synthesis of oxazepinic and piperidinic compounds. Two crystalline forms of the title compound have been obtained but only one [form (II)] gave suitable crystals for X-ray structure analysis. The five-membered ring has an envelope conformation with C(2) 0.60 (5) angstrom out of the plane defined by the other four atoms. It has been established that the oxime group has a syn conformation and the two enantiomers form a dimer around the centre of symmetry by means of hydrogen bonds between their oxime groups.
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Nurit, J., Declercq, J.-P., Rambaud, J., Pauvert, B., Terol, A., Chevallet, P., & Doumbia, O. (1995). Polymorph(ii) of Methyl 3-(4-ethoxy-alpha-hydroxyiminobenzyl)-1,2,2-trimethylcyclopentanecarboxylate. Acta Crystallographica. Section C: Crystal Structure Communications, 51, 322-324. https://doi.org/10.1107/S0108270194006013 (Original work published 1995)