Pregn-5-ene-3,11-dione, 17,20:20,21-bis[methylenebis(oxy)]-, cyclic 3-(1,2-ethanediyl acetal) synthesis

2synthesis methods

Product Name:Pregn-5-ene-3,11-dione, 17,20:20,21-bis[methylenebis(oxy)]-, cyclic 3-(1,2-ethanediyl acetal)
CAS Number:52248-40-5
Molecular formula:C25H34O7
Molecular Weight:446.53

50-04-4 Synthesis

50-04-4
334 suppliers
$37.27/1G

Pregn-5-ene-3,11-dione, 17,20:20,21-bis[methylenebis(oxy)]-, cyclic 3-(1,2-ethanediyl acetal)

52248-40-5
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Yield:-

Steps:

Multi-step reaction with 2 steps
1: hydrogenchloride / chloroform; water / 12 h / 23 °C / Inert atmosphere
2: toluene-4-sulfonic acid / benzene / 6 h / 110 °C / Dean-Stark; Inert atmosphere

References:

Renata, Hans;Zhou, Qianghui;Dünstl, Georg;Felding, Jakob;Merchant, Rohan R.;Yeh, Chien-Hung;Baran, Phil S. [Journal of the American Chemical Society,2015,vol. 137,# 3,p. 1330 - 1340]

107-21-1 Synthesis

107-21-1
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$10.00/25g

Pregn-4-ene-3,11-dione, 17,20:20,21-bis[methylenebis(oxy)]-

3607-68-9
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52248-40-5
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References