, Volume 51, Issue 5, pp 996-997
Date: 19 Nov 2010

Single crystal X-ray diffraction analysis of the structure of methyl 4-methyl-3,5-dioxo-1-phenyl-2-oxaspiro [5.5] undecane-4-carboxylate

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A single crystal X-ray diffraction study of the crystals of methyl 4-methyl-3,5-dioxo-1-phenyl-2-oxaspiro[5.5]undecane-4-carboxylate shows that phenyl and methoxycarbonyl substituents are in the equatorial position on the one side of the dioxopyran ring with twist boat conformation.