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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 22, 1992 - Issue 12
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Original Articles

Reduction of Steroidal Ketones and Enones by Sodium Dithionite in Presence of Phase Transfer Catalyst

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Pages 1655-1660 | Received 28 Jan 1992, Published online: 23 Sep 2006
 

Abstract

Sodium dithionite has been effectively used in the reduction of steroidal ketones and enones with remarkable selectivity and high yields under phase transfer catalysis (PTC) conditions to give alcohols and ketones respectively. An application of these selectivities is demonstrated by reducing an important steroid intermediate 16-dehydropregnenolone acetate to pregnenolone acetate in very high yields.

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