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Preparation of spirocyclic oxindoles by cyclisation of an oxime to a nitrone and dipolar cycloaddition

Beth L. Ritchie, Alexandra Longcake and Iain Coldham

Beilstein J. Org. Chem. 2025, 21, 1890–1896. https://doi.org/10.3762/bjoc.21.146

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Chemical structure C<sub>5</sub>H<sub>5</sub>NO<sub>2</sub>

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Extracted from

Scheme 3

Chemical Information

Calculated using the Chemistry Development Kit 2.12

Property Name	Property Value
Molecular Formula	C₅H₅NO₂
Molecular Weight	111.10 g/mol
Exact Mass	111.0320 Da
InChI	InChI=1S/C5H5NO2/c1-6-4(7)2-3-5(6)8/h2-3H,1H3
InChIKey	SEEYREPSKCQBBF-UHFFFAOYSA-N
SMILES	CN1C(=O)C=CC1=O
Number of Atoms	13
Number of H-Bond Acceptors	3
Number of H-Bond Donors	0
Atoms in the Largest π-System	7
XLogP	-0.5

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