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Sodium Azide → 4-Azido-2-[4-(4-chlorophenyl)piperazin-1-yl]-6,7-dihydrothieno[3,2-d]pyrimidine

HRID 1788028
Notes
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Reaction equation

HRID 1788028 reaction equation
Cl[C:2]1[C:3]2[S:23][CH2:22][CH2:21][C:4]=2[N:5]=[C:6]([N:8]2[CH2:13][CH2:12][N:11]([C:14]3[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][CH:15]=3)[CH2:10][CH2:9]2)[N:7]=1.[N-:24]=[N+:25]=[N-:26].[Na+]>CN(C)C=O>[N:24]([C:2]1[C:3]2[S:23][CH2:22][CH2:21][C:4]=2[N:5]=[C:6]([N:8]2[CH2:13][CH2:12][N:11]([C:14]3[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][CH:15]=3)[CH2:10][CH2:9]2)[N:7]=1)=[N+:25]=[N-:26]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

4

Reactant 2

HCID 33557Sodium AzideHCID 594759174-Chloro-2-[4-(4-chlorophenyl)piperazin-1-yl]-6,7-dihydrothieno[3,2-d]pyrimidine

Product 1

HCID 866162804-Azido-2-[4-(4-chlorophenyl)piperazin-1-yl]-6,7-dihydrothieno[3,2-d]pyrimidineYield 95%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
100 °C

Procedure

0.950 g (2.59 mmol) of 4-chloro-2-[4-(4-chlorophenyl)piperazin-1-yl]-6,7-dihydrothieno[3,2-d]pyrimidine (III) is placed in 20 mL of dimethylformamide and 0.900 g (13.84 mmol) of sodium azide is added. The reaction mixture is stirred for 4 hours at 100° C. It is then concentrated by evaporation, the residue is cooled in the ice bath and combined with water. The precipitate formed is suction filtered, washed, and dried. 0.920 g of product IV (76%) is obtained and used further in the crude state.

Workup

  1. concentrationIt is then concentrated by evaporation
  2. temperaturethe residue is cooled in the ice bath
  3. customThe precipitate formed
  4. filtrationfiltered
  5. washwashed
  6. customdried

Sources & evidence

ORD record
ord-63ba69d9ec1c42c5a3e00b419439b75d
Source dataset
uspto-grants-2009_03
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07511045B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes