Sulfuric Acid → HCID 69338791, compound

HRID 1063442Notes

Reaction equation

HRID 1063442 reaction equation
[NH2:1][CH:2]([OH:23])[C@H:3]([CH3:22])[CH2:4][CH2:5][C:6]1[S:7][C:8]([C:11]#[C:12][CH2:13][CH2:14][CH2:15][CH:16]2[CH2:21][CH2:20][CH2:19][CH2:18][CH2:17]2)=[CH:9][CH:10]=1.S(=O)(=O)(O)[OH:25].[OH-].[Na+]>CO>[NH2:1][CH:2]([OH:23])[C@H:3]([CH3:22])[CH2:4][CH2:5][C:6]1[S:7][C:8]([C:11](=[O:25])[CH2:12][CH2:13][CH2:14][CH2:15][CH:16]2[CH2:17][CH2:18][CH2:19][CH2:20][CH2:21]2)=[CH:9][CH:10]=1

Participants

5

Reactant 3

HCID 1118Sulfuric AcidHCID 14798Sodium HydroxideHCID 69338437HCID 69338437, compound

Product 1

HCID 69338791HCID 69338791, compoundYield 91%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

(2R)-Amino-2-methyl-4-[5-(5-cyclohexylpent-1-ynyl)thiophen-2-yl]butan-1-ol (126 mg, 0.41 mmol) obtained in Example 1 was dissolved in methanol (2 ml), and 6N sulfuric acid (2 ml) was added thereto followed by heating under reflux for 4 hours. After the reaction solution was made alkaline with a 1N aqueous sodium hydroxide solution, the resulting solution was extracted with dichloromethane. The dichloromethane layer was dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure to give the title compound (130 mg, 91% yield).

Workup

  1. temperatureby heating
  2. temperatureunder reflux for 4 hours
  3. extractionthe resulting solution was extracted with dichloromethane
  4. dry with materialThe dichloromethane layer was dried over anhydrous sodium sulfate
  5. customthe solvent was evaporated under reduced pressure

Sources & evidence

ORD record
ord-7ee6b2deb4a248e0aa39a8f062a588dc
Source dataset
uspto-grants-2005_11
Patent number
US06964976B2

Reaction notes

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