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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 40, 2009 - Issue 1
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Original Articles

Stereoselective Synthesis of Substituted 3a-Hydroxy Diquinanones and 3a-Hydroxy Hydrindanones via Intramolecular Cycloaddition of Nitrile Oxides

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Pages 87-103 | Received 16 Feb 2009, Published online: 09 Dec 2009
 

Abstract

trans-1,3-Divinylcyclopentanes bearing a ω-nitroalkyl chain (C2 or C3) in the 2-position were submitted to an intramolecular nitrile oxide cycloaddition process to give tricyclic isoxazoline precursors of 4-hydroxymethylbicyclo[3.3.0]octan-1-ol-3-ones or 5-hydroxymethyl-9-vinylbicyclo[4.3.0]nonan-1-ol-4-ones.

ACKNOWLEDGMENTS

A.-S. C. is grateful to the CNRS and la Région PACA for grants. We are indebted to Dr. B. Vacher (Pierre Fabre Médicaments, Castres, France) for helpful comments. This work has been financially supported by the CNRS and the Ministère de l'Education Nationale.

Notes

a B3LYP/6-311G++(p, d) level of the theory.

b B3LYP/6-311G++(2df, 2pd) level of the theory.

c Without ZPE correction.

a w = 1/[σ 2(Fo2) + (0.1205P)2 + 0.091P] where P = (Fo2 + 2Fc2)/3.

b w = 1/[σ 2(Fo2) + (0.0208P)2 + 1.1795P] where P = (Fo2 + 2Fc2)/3.

c w = 1/[σ 2(Fo2) + (0.1007P)2 + 2.9671P] where P = (Fo2 + 2Fc2)/3.

d w = 1/[σ Citation 2 (FoCitation 2 ) + (0.0909P)Citation 2 +0.1063P] where P = (Fo2 + 2Fc2)/3.

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