Water → 9-(3-Fluorobiphenyl-4-yl)-3,4-dihydropyrido[2,1-c][1,2,4]thiadiazine 2,2-dioxide

HRID 1622624Notes

Reaction equation

HRID 1622624 reaction equation
[H-].[Na+].Cl[CH2:4][CH2:5][S:6](Cl)(=[O:8])=[O:7].[F:10][C:11]1[CH:12]=[C:13]([C:24]2[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=2)[CH:14]=[CH:15][C:16]=1[C:17]1[C:18]([NH2:23])=[N:19][CH:20]=[CH:21][CH:22]=1.O>C1COCC1.CCCCCC>[F:10][C:11]1[CH:12]=[C:13]([C:24]2[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=2)[CH:14]=[CH:15][C:16]=1[C:17]1[C:18]2=[N:23][S:6](=[O:8])(=[O:7])[CH2:5][CH2:4][N:19]2[CH:20]=[CH:21][CH:22]=1

Participants

7

Reactant 4

HCID 962WaterHCID 15385Ethanesulfonylchloride, 2-chloro-HCID 24758Sodium hydrideHCID 667480303-(3-Fluorobiphenyl-4-yl)pyridin-2-amine

Product 1

HCID 667480549-(3-Fluorobiphenyl-4-yl)-3,4-dihydropyrido[2,1-c][1,2,4]thiadiazine 2,2-dioxideYield 79.1%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolvent2×HCID 8058HexaneSolvent

Procedure

To a suspension of 60% sodium hydride (0.76 g) in THF (20 mL) was added 2-chloroethanesulfonyl chloride (1.85 g) under ice-cooling. The reaction mixture was stirred under ice-cooling for 5 min, and a solution of 3-(3-fluorobiphenyl-4-yl)pyridin-2-amine (1.0 g) in THF (20 mL) was added. The reaction mixture was stirred at room temperature overnight, and water and hexane were added under ice-cooling. The resulting solid was collected by filtration, washed with diisopropyl ether, and dried under reduced pressure to give the title compound (1.06 g).

Workup

  1. temperaturecooling
  2. temperaturecooling for 5 min
  3. stirringThe reaction mixture was stirred at room temperature overnight
  4. temperaturecooling
  5. filtrationThe resulting solid was collected by filtration
  6. washwashed with diisopropyl ether
  7. customdried under reduced pressure

Sources & evidence

ORD record
ord-ef24a80b72f548ffae058f906450b269
Source dataset
uspto-grants-2014_07
Patent number
US08778934B2

Reaction notes

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