2-Thiophenesulfonyl chloride → N-{3-[4-hydroxy-1-(3-methylbutyl)-2-oxo-1,2-dihydro-1,8-naphthyridin-3-yl]-1,1-dioxido-4H-1,2,4-benzothiadiazin-7-yl}thiophene-2-sulfonamide

HRID 601377Notes

Reaction equation

HRID 601377 reaction equation
[NH2:1][C:2]1[CH:30]=[CH:29][C:5]2[NH:6][C:7]([C:12]3[C:13](=[O:28])[N:14]([CH2:23][CH2:24][CH:25]([CH3:27])[CH3:26])[C:15]4[C:20]([C:21]=3[OH:22])=[CH:19][CH:18]=[CH:17][N:16]=4)=[N:8][S:9](=[O:11])(=[O:10])[C:4]=2[CH:3]=1.[S:31]1[CH:35]=[CH:34][CH:33]=[C:32]1[S:36](Cl)(=[O:38])=[O:37]>N1C=CC=CC=1>[OH:22][C:21]1[C:20]2[C:15](=[N:16][CH:17]=[CH:18][CH:19]=2)[N:14]([CH2:23][CH2:24][CH:25]([CH3:27])[CH3:26])[C:13](=[O:28])[C:12]=1[C:7]1[NH:6][C:5]2[CH:29]=[CH:30][C:2]([NH:1][S:36]([C:32]3[S:31][CH:35]=[CH:34][CH:33]=3)(=[O:38])=[O:37])=[CH:3][C:4]=2[S:9](=[O:11])(=[O:10])[N:8]=1

Participants

4

Reactant 2

HCID 855182-Thiophenesulfonyl chlorideHCID 1354307103-(7-Amino-1,1-dioxido-4H-1,2,4-benzothiadiazin-3-yl)-4-hydroxy-1-(3-methylbutyl)-1,8-naphthyridin-2(1H)-one

Product 1

HCID 136358501N-{3-[4-hydroxy-1-(3-methylbutyl)-2-oxo-1,2-dihydro-1,8-naphthyridin-3-yl]-1,1-dioxido-4H-1,2,4-benzothiadiazin-7-yl}thiophene-2-sulfonamideYield 35%

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Conditions

Temperature
120 °C

Procedure

To the product of Example 205 (21.5 mg, 0.05 mmol) in pyridine (1 mL) was added 2-thiophenesulfonyl chloride (44 mg, 0.24 mmol). The reaction mixture was heated in a microwave reactor at 120° C. for 120 minutes. The reaction was cooled to 25° C. and concentrated under reduced pressure. The residue was triturated with water (1 mL), filtered, and washed with hexane:ethyl acetate (1:1). The crude product was chromatographed on silica gel eluting with 199:1 dichloromethane:methanol to give the title compound (10 mg, 35%). 1H NMR (300 MHz, DMSO-d6): δ 0.97 (d, J=6.25 Hz, 6 H) 1.55 (m, 2 H) 1.66 (m, 1 H) 4.46 (t, J=7.84 Hz, 2 H) 7.16 (dd, J=5.13 Hz, 3.66 Hz, 1 H) 7.48 (m, 2 H) 7.53 (d, J=2.21 Hz, 1 H) 7.56 (d, J=2.55 Hz, 1 H) 7.61 (dd, J=3.68, 1.47 Hz, 1 H) 7.68 (d, J=8.82 Hz, 1 H) 7.96 (dd, J=5.13 Hz, 1.47 Hz, 1 H) 8.53 (dd, J=8.09, 1.84 Hz, 1 H) 8.87 (dd, J=4.78, 1.84 Hz, 1 H) 10.98 (s, 1 H) 14.10 (s, 1 H). MS (ESI−) m/z 572 (M−H)−.

Workup

  1. temperatureThe reaction was cooled to 25° C.
  2. concentrationconcentrated under reduced pressure
  3. customThe residue was triturated with water (1 mL)
  4. filtrationfiltered
  5. washwashed with hexane:ethyl acetate (1:1)
  6. customThe crude product was chromatographed on silica gel eluting with 199:1 dichloromethane

Sources & evidence

ORD record
ord-2a9a70855c0a411587cbb9ea630fba62
Source dataset
uspto-grants-2011_03
Patent number
US07902203B2

Reaction notes

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