Diethyl Ether → 3-[3-(Dichloromethyl)-1,2-benzisothiazol-5-yl]-1-methyl-6-(trifluoromethyl)-2,4(1H,3H)-pyrimidinedione

HRID 1274605Notes

Reaction equation

HRID 1274605 reaction equation
BrC(Br)[C:3]1[C:7]2[CH:8]=[C:9]([N:12]3[C:17](=[O:18])[CH:16]=[C:15]([C:19]([F:22])([F:21])[F:20])[N:14]([CH3:23])[C:13]3=[O:24])[CH:10]=[CH:11][C:6]=2[S:5][N:4]=1.[Cl-].[Li+].C(OCC)C.[CH2:33]([Cl:35])[Cl:34]>CN(C)C=O.C(OCC)(=O)C>[Cl:34][CH:33]([Cl:35])[C:3]1[C:7]2[CH:8]=[C:9]([N:12]3[C:17](=[O:18])[CH:16]=[C:15]([C:19]([F:21])([F:22])[F:20])[N:14]([CH3:23])[C:13]3=[O:24])[CH:10]=[CH:11][C:6]=2[S:5][N:4]=1

Participants

7

Reactant 4

HCID 3283Diethyl EtherHCID 6344Dichloromethane2×HCID 433294Lithium ChlorideHCID 221198393-[3-(dibromomethyl)-1,2-benzisothiazol-5-yl]-1-methyl-6-(trifluoromethyl)-2,4(1H,3H)-pyrimidinedione

Product 1

HCID 221199823-[3-(Dichloromethyl)-1,2-benzisothiazol-5-yl]-1-methyl-6-(trifluoromethyl)-2,4(1H,3H)-pyrimidinedione

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

A solution of 3-[3-(dibromomethyl)-1,2-benzisothiazol-5-yl]-1-methyl-6-(trifluoromethyl)-2,4(1H,3H)-pyrimidinedione (0.750 g, 0.00150 mol) and lithium chloride (0.950 g, 0.0225 mol) in N,N-dimethylformamide is stirred at room temperature for 48 hours and diluted with ethyl acetate. The resultant mixture is washed sequentially with water and brine, dried over anhydrous magnesium sulfate, and concentrated in vacuo to obtain a foam. Column chromatography of the foam using silica gel, methylene chloride, and a 1% diethyl ether in methylene chloride solution gives the title product as a white foam (0.530 g, mp 148-149° C.).

Workup

  1. washThe resultant mixture is washed sequentially with water and brine
  2. dry with materialdried over anhydrous magnesium sulfate
  3. concentrationconcentrated in vacuo
  4. customto obtain a foam

Sources & evidence

ORD record
ord-c60fa8a7f7df48388eee992be0e39f14
Source dataset
uspto-grants-2000_12
Patent number
US06156700

Reaction notes

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