Water → HCID 68779478, compound

HRID 2262992Notes

Reaction equation

HRID 2262992 reaction equation
FC(F)(F)C(O)=O.[O:8]1[C:12]2[CH:13]=[CH:14][CH:15]=[CH:16][C:11]=2[C:10]([NH:17][C:18]([N:20]2[CH2:25][CH2:24][NH:23][CH2:22][CH2:21]2)=[O:19])=[N:9]1.C(N(CC)CC)C.Cl[C:34]([O:36][CH:37]([CH3:39])[CH3:38])=[O:35].O>O1CCCC1>[O:8]1[C:12]2[CH:13]=[CH:14][CH:15]=[CH:16][C:11]=2[C:10]([NH:17][C:18]([N:20]2[CH2:25][CH2:24][N:23]([C:34]([O:36][CH:37]([CH3:39])[CH3:38])=[O:35])[CH2:22][CH2:21]2)=[O:19])=[N:9]1

Participants

6

Reactant 4

HCID 962WaterHCID 7917Isopropyl chloroformateHCID 8471TriethylamineHCID 68778018N-1,2-Benzisoxazol-3-ylpiperazine-1-carboxamide trifluoroacetate

Product 1

HCID 68779478HCID 68779478, compoundYield 48.9%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of N-1,2-benzisoxazol-3-ylpiperazine-1-carboxamide trifluoroacetate (200 mg, 0.555 mmol) and triethylamine (0.309 ml, 2.22 mmol) in tetrahydrofuran (4 ml) was added isopropyl chloroformate (0.102 ml, 0.833 mmol) under ice-cooling, and the mixture was stirred at room temperature for 1 hour. The reaction mixture was poured to water and extracted with ethyl acetate. The extract was washed with water, and the solvent was distilled off under reduced pressure. The residue was recrystallized from a mixed solvent of hexane and ethyl acetate to give 90.0 mg (48.9%) of the desired product as a solid.

Workup

  1. temperaturecooling
  2. extractionextracted with ethyl acetate
  3. washThe extract was washed with water
  4. distillationthe solvent was distilled off under reduced pressure
  5. customThe residue was recrystallized from a mixed solvent of hexane and ethyl acetate

Sources & evidence

ORD record
ord-604046a9adbf42529334d824f53b7fb3
Source dataset
uspto-grants-2010_12
Patent number
US07851473B2

Reaction notes

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