A New Procedure to Δ^4-3-Ketosteroids from 5β-3-Ketosteroids

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• Crude isolated yield based on starting ketone: CrO3/2 Py: 65–86%
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• CrO3/AcOH: 25–60%
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• PCC: 5–10%
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• All Compounds reported herein have mp and spectral data consistent with the assigned structures. We thank Dr. K. Fisher from Lousiana State University for recording the mass spectra
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