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

HRID 2240127Notes

Reaction equation

HRID 2240127 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]

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-fa3aaadfb71d4d5f9aaab4b3c919b681
Source dataset
uspto-grants-2010_05
Patent number
US07723341B2

Reaction notes

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