反应详情

Dissolve dl-13-ethyl-6-methyl-3-methoxygona-2,5(10)-dien-17-one (3.6 g) in dimethylacetamide (35 ml) and stir in a stream of acetylene for 0.5 hour. Add solid lithium acetylide-ethylenediamine (2.7 g) and stir the solution for 4 hours. Pour the reaction mixture onto ice, extract with ether, wash the ether layer with water, dry, and evaporate to obtain dl-13-ethyl-3-methoxy-6-methyl-17α-ethynyl-17-hydroxygona-2,5(10)-diene (3.5 g) as a gum; infrared absorption peaks (sodium chloride) at 2.90 μ, 3.05 μ, 5.90 μ, 6.03 μ.

1. additionPour the reaction mixture onto ice
2. extractionextract with ether
3. washwash the ether layer with water
4. customdry
5. customevaporate