4-Chlorobenzenesulfonyl chloride → HCID 18697990, compound

HRID 2289544Notes

Reaction equation

HRID 2289544 reaction equation
C(OC([N:8]1[CH2:13][CH2:12][N:11]([C:14]([N:16]2[CH2:21][CH2:20][N:19]([C:22]3[CH:27]=[CH:26][N:25]=[C:24]([CH3:28])[N:23]=3)[CH2:18][CH2:17]2)=[O:15])[CH2:10][CH2:9]1)=O)(C)(C)C.C(N(CC)CC)C.[Cl:36][C:37]1[CH:42]=[CH:41][C:40]([S:43](Cl)(=[O:45])=[O:44])=[CH:39][CH:38]=1>ClCCl>[Cl:36][C:37]1[CH:42]=[CH:41][C:40]([S:43]([N:8]2[CH2:13][CH2:12][N:11]([C:14]([N:16]3[CH2:21][CH2:20][N:19]([C:22]4[CH:27]=[CH:26][N:25]=[C:24]([CH3:28])[N:23]=4)[CH2:18][CH2:17]3)=[O:15])[CH2:10][CH2:9]2)(=[O:45])=[O:44])=[CH:39][CH:38]=1

Participants

5

Reactant 3

HCID 73984-Chlorobenzenesulfonyl chlorideHCID 8471TriethylamineHCID 18697989HCID 18697989, compound

Product 1

HCID 18697990HCID 18697990, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

1-(tert-butoxycarbonyl)-4-(1-(2-methylpyrimidin-4-yl)piperazin-4-ylcarbonyl)piperazine (700 mg) was stirred in dichloromethane (20 ml) and triethylarnine (1.34 ml) and cooled in an ice-bath. 4-chlorobenzenesulphonylchloride (0.56 g) was added and reaction allowed to warm to room temperature and then stirred overnight. The mixture was evaporated and the residue was purified by chromatography on silica gel using in gradient of dichloromethane to 8% methanol in dichloromethane as eluent to give a foam. This was triturated with diethylether to give 1-(4-chlorophenylsulphonyl)-4-[1-(2-methylpyrimidin-4-yl)piperazin-4-ylcarbonyl]piperazine a colourless solid 1.05 g ;m.p. 183-184° C.; NMR (CDCl3): 8.15 (m, 1H), 7.7 (m, 2H), 7.55 (m, 2H), 6.3 (m, 1H), 3.65 (m, 4H), 3.45 (m, 4H), 3.35 (m, 4H), 3.05 (m, 4H), 2.5 (s, 3H).

Workup

  1. customreaction
  2. customThe mixture was evaporated
  3. customthe residue was purified by chromatography on silica gel using in gradient of dichloromethane to 8% methanol in dichloromethane as eluent
  4. customto give a foam
  5. customThis was triturated with diethylether

Sources & evidence

ORD record
ord-8b4ff46da9a74baf9bde49c438fbbfa0
Source dataset
uspto-grants-2000_07
Patent number
US06093718

Reaction notes

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