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

HRID 1747872Notes

Reaction equation

HRID 1747872 reaction equation
[CH3:1][CH:2]([O:4][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)[CH3:3].[H-].[Na+].Cl[CH2:21][CH2:22][S:23](Cl)(=[O:25])=[O:24].O>C1COCC1.CCCCCC>[CH3:3][CH:2]([O:4][C:5]1[CH:6]=[CH:7][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:9][CH:10]=1)[CH3:1]

Participants

7

Reactant 4

HCID 962WaterHCID 15385Ethanesulfonylchloride, 2-chloro-HCID 24758Sodium hydrideHCID 640876983-(4-Isopropoxyphenyl)pyridin-2-amine

Product 1

HCID 667478969-[4-(1-Methylethoxy)phenyl]-3,4-dihydropyrido[2,1-c][1,2,4]thiadiazine 2,2-dioxideYield 73.7%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolvent2×HCID 8058HexaneSolvent

Procedure

A mixture of 3-[4-(1-methylethoxy)phenyl]pyridin-2-amine (350 mg) in dehydrated THF (5 mL) was added to a mixture of sodium hydride (60%, 307 mg) and 2-chloroethanesulfonyl chloride (750 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 (360 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-9da482f621894e47807841b7b9ca0939
Source dataset
uspto-grants-2015_10
Patent number
US09150591B2

Reaction notes

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