Acetic Acid → tert-butyl [(3-{1-[(cyclopropylmethyl)amino]-4-hydroxy-2-oxo-1,2-dihydroquinolin-3-yl}-1,1-dioxido-4H-1,2,4-benzothiadiazin-7-yl)oxy]acetate

HRID 601360Notes

Reaction equation

HRID 601360 reaction equation
[CH:1]1([CH2:4][NH:5][N:6]2[C:15]3[C:10](=[CH:11][CH:12]=[CH:13][CH:14]=3)[C:9]([OH:16])=[C:8]([C:17]3[NH:22][C:21]4[CH:23]=[CH:24][C:25]([OH:27])=[CH:26][C:20]=4[S:19](=[O:29])(=[O:28])[N:18]=3)[C:7]2=[O:30])[CH2:3][CH2:2]1.Br[CH2:32][C:33]([O:35][C:36]([CH3:39])([CH3:38])[CH3:37])=[O:34].C(=O)([O-])[O-].[K+].[K+].C(O)(=O)C>CN(C)C=O.[I-].C([N+](CCCC)(CCCC)CCCC)CCC.O>[CH:1]1([CH2:4][NH:5][N:6]2[C:15]3[C:10](=[CH:11][CH:12]=[CH:13][CH:14]=3)[C:9]([OH:16])=[C:8]([C:17]3[NH:22][C:21]4[CH:23]=[CH:24][C:25]([O:27][CH2:32][C:33]([O:35][C:36]([CH3:39])([CH3:38])[CH3:37])=[O:34])=[CH:26][C:20]=4[S:19](=[O:28])(=[O:29])[N:18]=3)[C:7]2=[O:30])[CH2:2][CH2:3]1

Participants

8

Reactant 4

HCID 176Acetic AcidHCID 11430Potassium CarbonateHCID 79177tert-Butyl bromoacetateHCID 136358401HCID 136358401, compound

Product 1

HCID 136358498tert-butyl [(3-{1-[(cyclopropylmethyl)amino]-4-hydroxy-2-oxo-1,2-dihydroquinolin-3-yl}-1,1-dioxido-4H-1,2,4-benzothiadiazin-7-yl)oxy]acetateYield 38.4%

Reagents, catalysts & solvents 3

HCID 67553Tetrabutylammonium IodideCatalystHCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

The product of Example 320C (400 mg, 0.94 mmol) in N,N-dimethylformamide (10 mL) was reacted with tert-butyl bromoacetate (0.555 mL, 3.76 mmol), potassium carbonate (1.225 g, 3.76 mmol) and tetrabutylammonium iodide (catalytic) at 25° C. for overnight. The reaction mixture was diluted with water and adjusted to pH 7 with glacial acetic acid. The reaction was extracted with ethyl acetate and the organic layer was washed with aqueous sodium bicarbonate, water and brine, dried over anhydrous magnesium sulfate, filtered, and concentrated under reduced pressure. The resulting residue was chromatographed on silica gel eluting with a gradient of 3:1 hexanes:ethyl acetate to 1:1 hexanes:ethyl acetate to give the title compound (195 mg, 38%).

Workup

  1. extractionThe reaction was extracted with ethyl acetate
  2. washthe organic layer was washed with aqueous sodium bicarbonate, water and brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure
  6. customThe resulting residue was chromatographed on silica gel eluting with a gradient of 3:1 hexanes

Sources & evidence

ORD record
ord-ad5d0ab987e44504a56767bb945160ac
Source dataset
uspto-grants-2011_03
Patent number
US07902203B2

Reaction notes

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