Chloroacetonitrile → HCID 14279665, compound

HRID 1381817Notes

Reaction equation

HRID 1381817 reaction equation
[F:1][C:2]1[C:12]([N:13]2[C:21](=[O:22])[C:20]3[CH2:19][CH2:18][CH2:17][CH2:16][C:15]=3[C:14]2=[O:23])=[CH:11][C:5]2[NH:6][C:7](=[O:10])[CH2:8][O:9][C:4]=2[CH:3]=1.C(=O)([O-])[O-].[K+].[K+].Cl[CH2:31][C:32]#[N:33]>C(#N)C>[F:1][C:2]1[C:12]([N:13]2[C:21](=[O:22])[C:20]3[CH2:19][CH2:18][CH2:17][CH2:16][C:15]=3[C:14]2=[O:23])=[CH:11][C:5]2[N:6]([CH2:31][C:32]#[N:33])[C:7](=[O:10])[CH2:8][O:9][C:4]=2[CH:3]=1

Participants

5

Reactant 3

HCID 7856ChloroacetonitrileHCID 11430Potassium CarbonateHCID 137721852-(7-Fluoro-3-oxo-4H-1,4-benzoxazin-6-yl)-4,5,6,7-tetrahydroisoindole-1,3-dione

Product 1

HCID 14279665HCID 14279665, compoundYield 37.4%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Conditions

Temperature
5 °C

Procedure

A suspension of 2-[7-fluoro-2H-1,4-benzoxazin-3(4H)-on-6-yl]-4,5,6,7-tetrahydro-2H-isoindole-1,3-dione (2 g) and potassium carbonate (1.05 g) in acetonitrile (30 ml) is refluxed for 30 minutes. The resulting solution is cooled to a temperature of 5° C. To the solution is added dropwise chloroacetonitrile (0.72 g), and thereafter the solution is refluxed for 3 hours. The solvent is distilled off, and the residue is admixed with water and subjected to an extraction operation with the aid of dichloromethane. The dichloromethane layer is separated off, washed with water, and dried over sodium sulfate. The solution is concentrated to precipitate a crystalline product, which is then recrystallized in a solvent consisting of acetonitrile and water. As an end product, 2-[7-fluoro-4-cyanomethyl-2H-1,4-benzoxazin-3(4H)-on-6-yl]-4,5,6,7-tetrahydro-2H-isoindole-1,3-dione (0.84 g) is obtained. mp. 216°-220° C.

Workup

  1. temperatureis refluxed for 30 minutes
  2. temperaturethe solution is refluxed for 3 hours
  3. distillationThe solvent is distilled off
  4. customThe dichloromethane layer is separated off
  5. washwashed with water
  6. dry with materialdried over sodium sulfate
  7. concentrationThe solution is concentrated
  8. customto precipitate a crystalline product, which
  9. customis then recrystallized in a solvent

Sources & evidence

ORD record
ord-6932387b295e4072bd3e5db202965271
Source dataset
uspto-grants-1989_02
Patent number
US04804394

Reaction notes

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