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Clive W. Bird Jonathan Cobb Stanley C. Nyburg Adrian W. Parkins 《Tetrahedron》1995,51(48):13161-13166
Variable temperature nmr spectroscopy and X-ray crystallography have been employed to study the stereochemistry of 2-cyano-3,3-dimethyl-1-phenylpyrazolidin-5-one which thermally rearranges to 2,3-dihydro-2,2-dimethylpyrimido[1,2-a]benzimidazol-4(1H)-one. 相似文献
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