Hydrochloric Acid → Ethyl 4-(2-hydroxyethyl)picolinate

HRID 345342Notes

Reaction equation

HRID 345342 reaction equation
[Si]([O:8][CH2:9][CH2:10][C:11]1[CH:16]=[CH:15][N:14]=[C:13]([C:17]#N)[CH:12]=1)(C(C)(C)C)(C)C.[Na].Cl.[OH-].[Na+].C(=O)(O)[O-:24].[Na+].[CH2:28]([OH:30])[CH3:29]>>[OH:8][CH2:9][CH2:10][C:11]1[CH:16]=[CH:15][N:14]=[C:13]([C:17]([O:30][CH2:28][CH3:29])=[O:24])[CH:12]=1

Participants

7

Reactant 6

HCID 313Hydrochloric AcidHCID 702EthanolHCID 14798Sodium HydroxideHCID 516892Sodium BicarbonateHCID 5360545SodiumHCID 223217094-(Tert-butyl-dimethylsilyloxyethyl)-2-cyanopyridine

Product 1

HCID 19757799Ethyl 4-(2-hydroxyethyl)picolinate

Procedure

A solution of 22.2 g of 4-(tert-butyl-dimethylsilyloxyethyl)-2-cyanopyridine in 220 ml anhydrous ethanol containing 0.19 g of sodium is stirred at room temperature for 24 hours. The solution is then cooled to 0° and 22 ml of 6N hydrochloric acid added. The solution is stirred at room temperature for 16 hours, cooled to 0° and 7.5 ml 6N sodium hydroxide added followed by 75 ml saturated aqueous sodium bicarbonate. Extraction with methylene chloride and flash chromatography using ethyl acetate yields ethyl 4-(2-hydroxyethyl)-pyridine-2-carboxylate.

Workup

  1. temperatureThe solution is then cooled to 0°
  2. temperaturecooled to 0°
  3. extractionExtraction with methylene chloride and flash chromatography

Sources & evidence

ORD record
ord-fb51ac55d58e4f6eaf194ee9cad9c7b0
Source dataset
uspto-grants-1991_10
Patent number
US05057506

Reaction notes

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