Methanol → (17alpha)-17-Hydroxy-3-oxoandrosta-4,9(11)-diene-17-carbonitrile

HRID 1762252Notes

Reaction equation

HRID 1762252 reaction equation
CC(C)(O)[C:3]#[N:4].[C-]#N.[K+].[CH3:10][C@:11]12[CH2:28][CH:27]=[C:26]3[C@@H:16]([CH2:17][CH2:18][C:19]4[C@:24]3([CH3:25])[CH2:23][CH2:22][C:21](=[O:29])[CH:20]=4)[C@@H:15]1[CH2:14][CH2:13][C:12]2=[O:30].CO>O>[C:3]([C@@:12]1([OH:30])[CH2:13][CH2:14][C@H:15]2[C@H:16]3[C:26](=[CH:27][CH2:28][C@:11]12[CH3:10])[C@:24]1([CH3:25])[C:19](=[CH:20][C:21](=[O:29])[CH2:22][CH2:23]1)[CH2:18][CH2:17]3)#[N:4]

Participants

6

Reactant 4

HCID 887MethanolHCID 6406Acetone CyanohydrinHCID 9032Potassium CyanideHCID 2395959-Dehydroandrostenedione

Product 1

HCID 10859900(17alpha)-17-Hydroxy-3-oxoandrosta-4,9(11)-diene-17-carbonitrile

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

Acetone cyanohydrin (5 ml) and sufficient potassium cyanide to adjust the pH to 9.9 is added to a slurry of androst-4,9(11)-dien-3,17-dione (0, 5 g), methanol (40 ml) and water (2.5 g) at 40°. The reaction becomes homogeneous followed by precipitation of the product. After 3.5 hours, water (7.5 ml) is added dropwise and the reaction is allowed slowly to stir at 20°-25° overnight. The slurry is cooled on in ice bath, filtered, the solids washed with methanol/water (1/1) and dried under reduced pressure to give the title compound (4.54 g); [α]D (c=1, CHCl3)=+118°; MS=311, 296 and 284 m/e; NMR (CDCl3)=0.97, 1.37, 2.9, 5.5 and 5.70 δ.

Workup

  1. customThe reaction becomes homogeneous followed by precipitation of the product
  2. additionwater (7.5 ml) is added dropwise
  3. temperatureThe slurry is cooled on in ice bath
  4. filtrationfiltered
  5. washthe solids washed with methanol/water (1/1)
  6. customdried under reduced pressure

Sources & evidence

ORD record
ord-c858608e1a204dae867215d5e1b86785
Source dataset
uspto-grants-1989_05
Patent number
US04831131

Reaction notes

Loading…