Stereospecific Formation of Polycyclic Ferrocenyldihydropyrazoles Based on Z- and E-Isomeric Ferrocenyl-Substituted α,β-Unsaturated Ketones of the Heterocyclic Series
摘要：
The reactions of E - and Z -isomeric 2-(ferrocenylmethylidene)quinuclidin-3-one, 1-methyl-3-(ferrocenylmethylidene)piperidin-4-one, and 2-(ferrocenylmethylidene)tropinone with hydrazine proceed stereospecifically to form the same diastereomeric polycyclic ferrocenyldihydropyrazoles regardless of the geometrical configuration of the starting α,β-unsaturated ketones. The structure of the trans -diastereomer of 4-acetyl-3-ferrocenyl-1,4,5-triazatricyclo[5.2.2.0 2,6 ]undec-5-ene was established by X-ray diffraction analysis.
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DOI：
10.1023/A:1011375613460
被引量：
年份：
2001
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