6-Chloro-17-ethylpregna-4,6-diene-3,20-dione synthesis

2synthesis methods

Product Name:6-Chloro-17-ethylpregna-4,6-diene-3,20-dione
CAS Number:802-81-3
Molecular formula:C23H31ClO2
Molecular Weight:374.94

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6-Chloro-17-ethylpregna-4,6-diene-3,20-dione

802-81-3
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Yield:-

Steps:

Multi-step reaction with 4 steps
1: (i) Li, liq. NH₃, Et₂O, THF, (ii) /BRN= 385737/, Py
2: (alkaline hydrolysis)
3: Al(OiPr)3, cyclohexanone, 2,3,5,6-tetrachloro<1,4>benzoquinone / toluene
4: (i) monoperoxyphthalic acid, CH₂Cl₂, Et₂O, (ii) HCl, AcOH

References:

DEGHENGHI;REVESZ;GAUDRY [Journal of medicinal chemistry,1963,vol. 6,p. 301 - 304]

Pregna-4,6-diene-3,20-dione, 17-ethyl- (7CI,8CI)

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802-81-3
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References