Steroids XXV. Synthesis of some 4-azapre
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Norman J. Doorenbos; C. Richard Tamorria
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Article
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1965
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John Wiley and Sons
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English
β 385 KB
cooled mixture was added a solution of 0.65 ml. (5.9 mmoles) of titanium tetrachloride in 10 ml. of ethylene dichloride and the mixture heated under reflux for 22 hr. While still warm, 85 ml. of aqueous saturated sodium bicarbonate was added with Vigorous stirring. After 2 hr., the mixture was filte