4-Chlorobenzenesulfonyl chloride → HCID 57463131, compound

HRID 1783804Notes

Reaction equation

HRID 1783804 reaction equation
Cl.[CH3:2][O:3][C:4]1[CH:5]=[C:6]([C:10]2[N:11]=[C:12]3[N:16]([C:17]=2[C:18]2[CH:23]=[CH:22][N:21]=[C:20]([NH:24][C@@H:25]4[CH2:30][CH2:29][CH2:28][NH:27][CH2:26]4)[N:19]=2)[CH:15]=[CH:14][S:13]3)[CH:7]=[CH:8][CH:9]=1.CCN(C(C)C)C(C)C.[Cl:40][C:41]1[CH:46]=[CH:45][C:44]([S:47](Cl)(=[O:49])=[O:48])=[CH:43][CH:42]=1>C(Cl)Cl>[Cl:40][C:41]1[CH:46]=[CH:45][C:44]([S:47]([N:27]2[CH2:28][CH2:29][CH2:30][C@@H:25]([NH:24][C:20]3[N:19]=[C:18]([C:17]4[N:16]5[C:12]([S:13][CH:14]=[CH:15]5)=[N:11][C:10]=4[C:6]4[CH:7]=[CH:8][CH:9]=[C:4]([O:3][CH3:2])[CH:5]=4)[CH:23]=[CH:22][N:21]=3)[CH2:26]2)(=[O:49])=[O:48])=[CH:43][CH:42]=1

Participants

5

Reactant 3

HCID 73984-Chlorobenzenesulfonyl chlorideHCID 81531DiisopropylethylamineHCID 67519766HCID 67519766, compound

Product 1

HCID 57463131HCID 57463131, compoundYield 85%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

The 4-[6-(3-methoxyphenyl)imidazo[2,1-b][1,3]thiazol-5-yl]-N-[(3R)-piperidin-3-yl]pyrimidin-2-amine hydrochloride (6.81 g, 14.2 mmol) in methylene chloride (DCM) (60 ml) was cooled to 0° C. and was treated with Hunig's base (9.9 ml, 56.8 mmol). The mixture was kept at 0° C. for 30 minutes then the 4-chlorophenylsulfonyl chloride (3.3 g, 15.6 mmol) was added. The reaction mixture was stirred at room temperature overnight. The mixture was diluted with methylene chloride (100 ml) and was washed water (100 ml) and a saturated aqueous sodium chloride solution (100 ml). The organic phase was dried over sodium sulfate and concentrated in vacuo. The crude product was purified by flash chromatography using a gradient (ethyl acetate/hexanes, 40-100%), affording 6.98 g (85%) of the title compound as a pale yellow solid. 400 MHz 1H NMR (DMSO-d6 at 60° C.) δ: 8.42 (br. s, 1H), 8.12 (d, J=5.1 Hz, 1H), 7.8-7.75 (m, 2H), 7.7-7.65 (m, 2H), 7.43-7.39 (m, 1H), 7.36 (d, J=7.8 Hz, 1H), 7.18-7.1 (m, 2H), 7.05-6.98 (m, 1H), 6.42 (d, J=5.1 Hz, 1H), 4.0-3.9 (m, 1H), 3.78 (s, 3H), 3.74 (d, J=11.7 Hz, 1H), 3.48 (d, J=11.7 Hz, 1H), 2.5-2.4 (m, 1H), 2.33 (t, J=5.3 Hz, 1H), 1.95-1.8 (m, 2H), 1.65-1.5 (m, 1H), 1.45-1.4 (m, 1H). LCMS: 581 [M+H].

Workup

  1. washwas washed water (100 ml)
  2. dry with materialThe organic phase was dried over sodium sulfate
  3. concentrationconcentrated in vacuo
  4. customThe crude product was purified by flash chromatography

Sources & evidence

ORD record
ord-8c25133a0db040a5a477ace4e9b5271a
Source dataset
uspto-grants-2009_03
Patent number
US07501430B2

Reaction notes

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