Hydrochloric Acid → HCID 15871116, compound

HRID 1764972Notes

Reaction equation

HRID 1764972 reaction equation
[BH4-].[Na+].[C:3]([C@:5]12[CH2:29][C:28](=[O:30])[CH2:27][CH2:26][C@:25]1([CH3:31])[C:24]1[CH2:23][CH2:22][C@@:21]3([CH3:32])[C@@H:9]([CH2:10][CH2:11][C@@H:12]3[C@H:13]([CH3:20])[CH2:14][CH2:15][CH2:16][CH:17]([CH3:19])[CH3:18])[C:8]=1[CH2:7][CH2:6]2)#[N:4].Cl>C(O)C>[C:3]([C@:5]12[CH2:29][C@@H:28]([OH:30])[CH2:27][CH2:26][C@:25]1([CH3:31])[C:24]1[CH2:23][CH2:22][C@@:21]3([CH3:32])[C@@H:9]([CH2:10][CH2:11][C@@H:12]3[C@H:13]([CH3:20])[CH2:14][CH2:15][CH2:16][CH:17]([CH3:19])[CH3:18])[C:8]=1[CH2:7][CH2:6]2)#[N:4].[C:3]([C@:5]12[CH2:29][C@H:28]([OH:30])[CH2:27][CH2:26][C@:25]1([CH3:31])[C:24]1[CH2:23][CH2:22][C@@:21]3([CH3:32])[C@@H:9]([CH2:10][CH2:11][C@@H:12]3[C@H:13]([CH3:20])[CH2:14][CH2:15][CH2:16][CH:17]([CH3:19])[CH3:18])[C:8]=1[CH2:7][CH2:6]2)#[N:4]

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 4311764Sodium borohydrideHCID 15871126HCID 15871126, compound

Product 2

HCID 15871116HCID 15871116, compoundHCID 15871117HCID 15871117, compound

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

327 mg sodium borohydride are added to a solution of 1.76 g 5-cyano-5α-cholest-8-en-3-one in 200 ml ethanol at room temperature. The reaction mixture is stirred for 4 hours. After addition of hydrochloric acid (1 N) the resulting mixture is extracted with dichloromethane. The organic layer is separated, dried over anhydrous sodium sulphate and filtered. After evaporation of the solvent the residue is chromatographed with a mixture of hexane and ethyl acetate to give 0.36 mg 5-cyano-5α-cholest-8-en-3β-ol and 1.00 g 5-cyano-5α-cholest-8-en-3α-ol as white solids.

Workup

  1. extractionis extracted with dichloromethane
  2. customThe organic layer is separated
  3. dry with materialdried over anhydrous sodium sulphate
  4. filtrationfiltered
  5. customAfter evaporation of the solvent the residue
  6. customis chromatographed with a mixture of hexane and ethyl acetate

Sources & evidence

ORD record
ord-5bc6ee5123e742a28c0b16b195d0f9da
Source dataset
uspto-grants-2007_06
Patent number
USRE039678E1

Reaction notes

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