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Triethylamine → 4-(2-Chloro-6-methanesulfonylamino-phenyl)-piperazine-1-carboxylic acid tert-butyl ester

HRID 500969
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HRID 500969 반응식
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][N:11]([C:14]2[C:19]([Cl:20])=[CH:18][CH:17]=[CH:16][C:15]=2[NH2:21])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH3:22][S:23](Cl)(=[O:25])=[O:24].C(N(CC)CC)C.C([O-])(O)=O.[Na+]>C(Cl)Cl.CCOC(C)=O>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][N:11]([C:14]2[C:15]([NH:21][S:23]([CH3:22])(=[O:25])=[O:24])=[CH:16][CH:17]=[CH:18][C:19]=2[Cl:20])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]
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7

반응물 4

HCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 516892Sodium BicarbonateHCID 684670964-(2-Amino-6-chloro-phenyl)-piperazine-1-carboxylic acid tert-butyl ester

생성물 1

HCID 684630944-(2-Chloro-6-methanesulfonylamino-phenyl)-piperazine-1-carboxylic acid tert-butyl ester수율 70.2%

시약·촉매·용매 2

HCID 6344
Dichloromethane
용매
HCID 8857Ethyl Acetate용매

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온도
25 °C

실험 절차

4-(2-Amino-6-chloro-phenyl)-piperazine-1-carboxylic acid tert-butyl ester (163 mg, 0.53 mmol) in CH2Cl2 was treated with 62 □L (0.80 mmol, 1.5 eq) of methanesulfonyl chloride and 148 □L (1.06 mmol, 2 eq) of triethylamine and the reaction mixture stirred at 25° C. for 1 h. EtOAc (40 mL) and sat. NaHCO3 (20 mL) were added. The organic layer was separated and washed with H2O (20 mL), brine (20 mL), dried over Na2SO4, and concentrated. Column chromatography (silica, 0-5% acetone/CH2Cl2) provided 145 mg (70%) of 4-(2-chloro-6-methanesulfonylamino-phenyl)-piperazine-1-carboxylic acid tert-butyl ester. TLC (silica, 5% acetone/CH2Cl2): Rf=0.35. MS (electrospray): exact mass calculated for C16H24ClN3O4S, 389.12; m/z found, 388.1 (negative). 1H NMR (400 MHz, CDCl3): 7.41 (dd, J=8.2, 1.6 Hz, 1H), 7.11 (t, J=8.2 Hz, 1H), 6.99 (dd, J=8.2, 1.6 Hz, 1H), 4.25-3.91 (m, 2H), 3.66-3.52 (m, 2H), 3.01 (s, 3H), 3.01-2.84 (m, 2H), 2.70-2.56 (m, 2H), 2.55-2.43 (m, 2H), 1.44 (s, 9H).

후처리

  1. customThe organic layer was separated
  2. washwashed with H2O (20 mL), brine (20 mL)
  3. dry with materialdried over Na2SO4
  4. concentrationconcentrated

출처 및 근거

ORD 기록
ord-7bd1dfaba4b54a16873d5ec9d3de2517
출처 데이터셋
uspto-grants-2010_08
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07772236B2

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