Steroids XL. Michael Reaction with Steroidal 3-Keto-1- enes, 3-Keto-1 ,4-dienes and 3-Keto- 1,4,6-trienes in the Presence of Tetramethylguanidine

Institute of Organic Chemistry, Polish Academy of Sciences, 00 961 Warsaw.

New 1-nitromethyl- and 1,7-di(nitromethyl)-steroids have been prepared by condensing of unsaturated 3-ketones with nitromethane in the presence of tetramethylgnanidine.