Triethylamine → HCID 58724177, compound

HRID 2356221Notes

Reaction equation

HRID 2356221 reaction equation
[N:1]1([C:7]2([C:11]([O:13][CH2:14][CH3:15])=[O:12])[CH2:10][CH2:9]C2)[CH2:6][CH2:5][NH:4][CH2:3][CH2:2]1.C(N(CC)CC)C.[Cl:23][C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][C:25]=1[S:30](Cl)(=[O:32])=[O:31].C([O-])(O)=O.[Na+]>C(Cl)Cl>[Cl:23][C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][C:25]=1[S:30]([N:4]1[CH2:3][CH2:2][N:1]([C:7]2([C:11]([O:13][CH2:14][CH3:15])=[O:12])[CH2:10][CH2:9]2)[CH2:6][CH2:5]1)(=[O:32])=[O:31]

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 761872-Chlorobenzenesulfonyl chlorideHCID 516892Sodium BicarbonateHCID 62389644HCID 62389644, compound

Product 1

HCID 58724177HCID 58724177, compoundYield 63%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Ethyl 1-(piperazin-1-yl)cyclobutanecarboxylate (0.20 mmol) was dissolved in CH2Cl2 (1 ml). Triethylamine (0.30 ml, 2.2 mmol), followed by 2-chlorobenzenesulfonyl chloride (64 mg, 0.30 mmol), was added at room temperature. The orange-colored solution was stirred at room temperature for 18 h before saturated NaHCO3 solution was added. The mixture was extracted twice with EtOAc. Combined organic layers were washed once with brine, dried over MgSO4, filtered and concentrated. The crude product was purified by column chromatography (SiO2, 25% EtOAc/hexanes) to give ethyl 1-(4-(2-chlorophenylsulfonyl)piperazin-1-yl)cyclopropanecarboxylate (47 mg, 63% 2 steps) as a white solid. 1H NMR (400 MHz, CHLOROFORM-D) δ ppm: 0.85 (m, 2 H), 1.23 (t, J=7.5 Hz, 3 H), 1.23 (m, 2 H), 2.98 (bs, 4 H), 3.14 (bs, 4 H), 4.09 (q, J=7.2 Hz, 2 H), 7.37 (t, J=7.3 Hz, 1 H), 7.42-7.53 (m, 2 H), 8.00 (d, J=7.8 Hz, 1 H), 13C NMR (100 MHz, CHLOROFORM-D) δ ppm 14.3, 19.1, 45.7, 46.7, 48.8, 60.5, 126.9, 132.1, 132.2, 132.3, 133.6, 136.0, 173.8; ESI-MS: m/z 373.3 (M+H)+.

Workup

  1. additionwas added at room temperature
  2. additionwas added
  3. extractionThe mixture was extracted twice with EtOAc
  4. washCombined organic layers were washed once with brine
  5. dry with materialdried over MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customThe crude product was purified by column chromatography (SiO2, 25% EtOAc/hexanes)

Sources & evidence

ORD record
ord-c527bea7033c4252b03ba8b9c9379b8e
Source dataset
uspto-grants-2010_07
Patent number
US07759339B2

Reaction notes

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