(2aR*,5S*,6aS*,8aS*,E)-Ethyl 5-hydroxy-7,7,8a-trimethyl-8-oxo-2,2a,6,6a,7,8,8a,8b-octahydro-1H-pentaleno[1,6-bc]oxepine-4-carboxylate

The title compound, C17H24O5, featuring a 2-carbethoxy-3-oxepanone unit in its intramolecularly O—H...O hydrogen-bonded enol form, was obtained via [(CF3CO2)2Rh]2-catalysed intramolecular O—H bond insertion in the α-diazo-ω-hydroxy-β...

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Main Authors: Goverdhan Mehta, C. S. Ananda Kumar, Saikat Sen
Format: Article
Language:English
Published: International Union of Crystallography 2012-12-01
Series:Acta Crystallographica Section E
Online Access:http://scripts.iucr.org/cgi-bin/paper?S1600536812046776
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author Goverdhan Mehta
C. S. Ananda Kumar
Saikat Sen
author_facet Goverdhan Mehta
C. S. Ananda Kumar
Saikat Sen
author_sort Goverdhan Mehta
collection DOAJ
description The title compound, C17H24O5, featuring a 2-carbethoxy-3-oxepanone unit in its intramolecularly O—H...O hydrogen-bonded enol form, was obtained via [(CF3CO2)2Rh]2-catalysed intramolecular O—H bond insertion in the α-diazo-ω-hydroxy-β-ketoester, ethyl 4-[(1S,3aS,6R,6aS)-6-hydroxy-2,2,3a-trimethyl-3-oxo-octahydropentalen-1-yl]-2-diazo-3-oxobutanoate. The seven-membered oxacyclic ring, thus constructed on a cis-fused diquinane platform, was found to adopt a distorted boat–sofa conformation.
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spelling doaj.art-68aef6b1bf9449c6a1ca1ef76d726bf02022-12-21T20:05:12ZengInternational Union of CrystallographyActa Crystallographica Section E1600-53682012-12-016812o3392o339310.1107/S1600536812046776(2aR*,5S*,6aS*,8aS*,E)-Ethyl 5-hydroxy-7,7,8a-trimethyl-8-oxo-2,2a,6,6a,7,8,8a,8b-octahydro-1H-pentaleno[1,6-bc]oxepine-4-carboxylateGoverdhan MehtaC. S. Ananda KumarSaikat SenThe title compound, C17H24O5, featuring a 2-carbethoxy-3-oxepanone unit in its intramolecularly O—H...O hydrogen-bonded enol form, was obtained via [(CF3CO2)2Rh]2-catalysed intramolecular O—H bond insertion in the α-diazo-ω-hydroxy-β-ketoester, ethyl 4-[(1S,3aS,6R,6aS)-6-hydroxy-2,2,3a-trimethyl-3-oxo-octahydropentalen-1-yl]-2-diazo-3-oxobutanoate. The seven-membered oxacyclic ring, thus constructed on a cis-fused diquinane platform, was found to adopt a distorted boat–sofa conformation.http://scripts.iucr.org/cgi-bin/paper?S1600536812046776
spellingShingle Goverdhan Mehta
C. S. Ananda Kumar
Saikat Sen
(2aR*,5S*,6aS*,8aS*,E)-Ethyl 5-hydroxy-7,7,8a-trimethyl-8-oxo-2,2a,6,6a,7,8,8a,8b-octahydro-1H-pentaleno[1,6-bc]oxepine-4-carboxylate
Acta Crystallographica Section E
title (2aR*,5S*,6aS*,8aS*,E)-Ethyl 5-hydroxy-7,7,8a-trimethyl-8-oxo-2,2a,6,6a,7,8,8a,8b-octahydro-1H-pentaleno[1,6-bc]oxepine-4-carboxylate
title_full (2aR*,5S*,6aS*,8aS*,E)-Ethyl 5-hydroxy-7,7,8a-trimethyl-8-oxo-2,2a,6,6a,7,8,8a,8b-octahydro-1H-pentaleno[1,6-bc]oxepine-4-carboxylate
title_fullStr (2aR*,5S*,6aS*,8aS*,E)-Ethyl 5-hydroxy-7,7,8a-trimethyl-8-oxo-2,2a,6,6a,7,8,8a,8b-octahydro-1H-pentaleno[1,6-bc]oxepine-4-carboxylate
title_full_unstemmed (2aR*,5S*,6aS*,8aS*,E)-Ethyl 5-hydroxy-7,7,8a-trimethyl-8-oxo-2,2a,6,6a,7,8,8a,8b-octahydro-1H-pentaleno[1,6-bc]oxepine-4-carboxylate
title_short (2aR*,5S*,6aS*,8aS*,E)-Ethyl 5-hydroxy-7,7,8a-trimethyl-8-oxo-2,2a,6,6a,7,8,8a,8b-octahydro-1H-pentaleno[1,6-bc]oxepine-4-carboxylate
title_sort 2ar 5s 6as 8as e ethyl 5 hydroxy 7 7 8a trimethyl 8 oxo 2 2a 6 6a 7 8 8a 8b octahydro 1h pentaleno 1 6 bc oxepine 4 carboxylate
url http://scripts.iucr.org/cgi-bin/paper?S1600536812046776
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AT saikatsen 2ar5s6as8aseethyl5hydroxy778atrimethyl8oxo22a66a788a8boctahydro1hpentaleno16bcoxepine4carboxylate