2-oxopropanamide

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 3.4 g. Phenethylhydrazine hydrochloride are dissolved in 10 ml. water and mixed with 1.7 g. pyruvamide dissolved in 50 ml. water. 2.1 g. sodium acetate trihydrate are added thereto and the reaction mixture well shaken up. 2-(Phenethylhydrazono)-propionamide crystallizes out. It is filtered off and recrystallized from a mixture of cyclohexane and toluene. The yield is 2.0 g. (50% of theory); m.p. 78° C. (decomp.). 2-(Phenethylhydrazono)-propionamide crystallizes out It is filtered off recrystallized from a mixture of cyclohexane and toluene

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (VI) or triamcinolone is reacted with an acetylcarboxamide in a solution of dichloromethane in the presence of catalytic amount of perchloric acid to produce the corresponding 16α,17-aminocarbonylcyclic acetal pregnane derivatives, e.g., when triamcinolone and acetylpropyl (N-methyl) carboxamide are used the product is (XVIII) 9α-fluoro-11β, 21-dihydroxy-3,20-dioxo-16α,17-(methyl,methylaminocarbonyl-n-propyl)methylenedioxy-1,4-pregnadiene;