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

HRID 1622603Notes

Reaction equation

HRID 1622603 reaction equation
[CH3:1][CH:2]([C:5]1[CH:10]=[CH:9][C:8]([C:11]2[C:12]([NH2:17])=[N:13][CH:14]=[CH:15][CH:16]=2)=[CH:7][CH:6]=1)[CH2:3][CH3:4].[H-].[Na+].Cl[CH2:21][CH2:22][S:23](Cl)(=[O:25])=[O:24].O>C1COCC1.CCCCCC>[CH3:1][CH:2]([C:5]1[CH:10]=[CH:9][C:8]([C:11]2[C:12]3=[N:17][S:23](=[O:25])(=[O:24])[CH2:22][CH2:21][N:13]3[CH:14]=[CH:15][CH:16]=2)=[CH:7][CH:6]=1)[CH2:3][CH3:4]

Participants

7

Reactant 4

HCID 962WaterHCID 15385Ethanesulfonylchloride, 2-chloro-HCID 24758Sodium hydrideHCID 655513623-[4-(1-Methylpropyl)phenyl]pyridin-2-amine

Product 1

HCID 667487059-[4-(1-Methylpropyl)phenyl]-3,4-dihydropyrido[2,1-c][1,2,4]thiadiazine 2,2-dioxideYield 89.6%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolvent2×HCID 8058HexaneSolvent

Procedure

A mixture of 3-[4-(1-methylpropyl)phenyl]pyridin-2-amine (300 mg) in dehydrated THF (5 mL) was added to a mixture of sodium hydride (60%, 265 mg) and 2-chloroethanesulfonyl chloride (648 mg) in dehydrated THF (5 mL) under ice-cooling. The reaction mixture was stirred at room temperature overnight, and water and hexane were added. The resulting precipitate was collected by filtration, and washed with water and diisopropyl ether to give the title compound (376 mg) as a white solid. The obtained solid was crystallized from THF, acetonitrile and diisopropyl ether to give a white solid.

Workup

  1. temperaturecooling
  2. filtrationThe resulting precipitate was collected by filtration
  3. washwashed with water and diisopropyl ether

Sources & evidence

ORD record
ord-63413cb77b14473aaf0367431cfe1768
Source dataset
uspto-grants-2014_07
Patent number
US08778934B2

Reaction notes

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