Ethanol → Ethyl 2-[(5-amino-1,3,4-thiadiazol-2-yl)sulfanyl]acetate

HRID 982211Notes

Reaction equation

HRID 982211 reaction equation
[NH2:1][C:2]1[S:3][C:4]([SH:7])=[N:5][N:6]=1.C(=O)([O-])[O-].[K+].[K+].C(O)C.Br[CH2:18][C:19]([O:21][CH2:22][CH3:23])=[O:20]>O>[NH2:1][C:2]1[S:3][C:4]([S:7][CH2:18][C:19]([O:21][CH2:22][CH3:23])=[O:20])=[N:5][N:6]=1

Participants

6

Reactant 4

HCID 702EthanolHCID 7748Ethyl bromoacetateHCID 11430Potassium CarbonateHCID 178509208HCID 178509208, compound

Product 1

HCID 351912Ethyl 2-[(5-amino-1,3,4-thiadiazol-2-yl)sulfanyl]acetateYield 42.1%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

To a mixture of 3.9 g of 2-amino-5-mercapto-1,3,4-thiadiazole, 4.2 g of potassium carbonate and 50 ml of ethanol was gradually added 5 g of ethyl bromoacetate under ice cooling. Then, the mixture was stirred at room temperature for 3 hours. To the reaction mixture was added 200 ml of water followed by extraction with ethyl acetate. After washing with water, the extract was dried over anhydrous magenesium sulfate and the solvent was distilled off. The solid obtained was washed with toluene and dried to obtain 2.7 g of ethyl [(5-amino-1,3,4-thiadiazol-2-yl)thio]acetate.

Workup

  1. extractionfollowed by extraction with ethyl acetate
  2. washAfter washing with water
  3. dry with materialthe extract was dried over anhydrous magenesium sulfate
  4. distillationthe solvent was distilled off
  5. customThe solid obtained
  6. washwas washed with toluene
  7. customdried

Sources & evidence

ORD record
ord-c5ce11a7943041afa74527a3b7a73fe6
Source dataset
uspto-grants-1991_02
Patent number
US04994479

Reaction notes

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