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 acteylene 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. stirringstir the solution for 4 hours
2. additionPour the reaction mixture onto ice
3. extractionextract with ether
4. washwash the ether layer with water
5. customdry
6. customevaporate