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Dicyclohexylcarbodiimide → (R)-benzyl 1-(6-(3-chlorophenylamino)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazol-3-yl)ethylcarbamate

HRID 446910
Notes
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Reaction equation

HRID 446910 reaction equation
[SH:1][C:2]1[N:3]([NH2:20])[C:4]([C@H:7]([NH:9][C:10](=[O:19])[O:11][CH2:12][C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=2)[CH3:8])=[N:5][N:6]=1.[Cl:21][C:22]1[CH:23]=[C:24]([N:28]=[C:29]=S)[CH:25]=[CH:26][CH:27]=1.C1(N=C=NC2CCCCC2)CCCCC1>C(O)C.CCOCC>[Cl:21][C:22]1[CH:23]=[C:24]([NH:28][C:29]2[S:1][C:2]3=[N:6][N:5]=[C:4]([C@H:7]([NH:9][C:10](=[O:19])[O:11][CH2:12][C:13]4[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=4)[CH3:8])[N:3]3[N:20]=2)[CH:25]=[CH:26][CH:27]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 3

HCID 10868DicyclohexylcarbodiimideHCID 754493-Chlorophenyl isothiocyanateHCID 178462184HCID 178462184, compound

Product 1

HCID 86642295(R)-benzyl 1-(6-(3-chlorophenylamino)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazol-3-yl)ethylcarbamateYield 48.7%

Reagents, catalysts & solvents 2

HCID 702Ethanol
Solvent
HCID 3283Diethyl EtherSolvent

Conditions

Temperature
80 °C

Procedure

(Step 8-ii) A mixture of (R)-benzyl 1-(5-mercapto-4-amino-4H-1,2,4-triazol-3-yl)ethylcarbamate (1.32 g, 4.5 mmol) in ethanol (15 mL) was heated to 80° C. and 3-chlorophenylisothiocyanate (1.3 g, 7.65 mmol) and dicyclohexylcarbodiimide (1.11 g, 5.4 mmol) were added. After 4 hours, the reaction was cooled, diluted with an equal volume of ether, and filtered. The filter cake was washed with additional ether and the collected solids dried in vacuo to provide 0.94 g of (R)-benzyl 1-(6-(3-chlorophenylamino)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazol-3-yl)ethylcarbamate: ESMS MH+=429.

Workup

  1. temperaturethe reaction was cooled
  2. filtrationfiltered
  3. washThe filter cake was washed with additional ether
  4. customthe collected solids dried in vacuo

Sources & evidence

ORD record
ord-99b478e2c89843c2a1f93812d9885667
Source dataset
uspto-grants-2013_07
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08481538B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes