Tetrafluorophthalic anhydride → 182690-76-2

HRID 1058073Notes

Reaction equation

HRID 1058073 reaction equation
[F:1][C:2]1[C:3]([F:15])=[C:4]([F:14])[C:5]([F:13])=[C:6]2[C:11](=[O:12])[O:10][C:8](=O)[C:7]=12.[CH3:16][C@H:17]([NH2:24])[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1>C(Cl)(Cl)Cl>[C:18]1([C@@H:17]([N:24]2[C:11](=[O:12])[C:6]3[C:7](=[C:2]([F:1])[C:3]([F:15])=[C:4]([F:14])[C:5]=3[F:13])[C:8]2=[O:10])[CH3:16])[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1

Participants

4

Reactant 2

HCID 69545Tetrafluorophthalic anhydrideHCID 758181-Phenethylamine, (-)-

Product 1

HCID 9883659182690-76-2Yield 74.4%

Reagents, catalysts & solvents 1

HCID 6212ChloroformSolvent

Conditions

Temperature
180 °C

Procedure

220 mg of tetrafluorophthalic anhydride and 121 mg of (S)-α-methylbenzylamine were charged in an egg-plant type flask of 50 ml, followed by stirring under heating at a temperature of 180° C. for 2 hours. After cooled, the reaction product was dissolved in chloroform, purified by silica gel column chromatography (eluent; methylene chloride:methanol=30:1 v/v), recrystallized from a mixed solvent of n-hexane-ethyl acetate, to obtain 240 mg of the desired product as colorless needles. Yield: 74%. m.p. 95-96° C.; [α]20D−=242.2° (C=0.386 AcOEt); MS(EI+) 323(M)+

Workup

  1. temperatureAfter cooled
  2. custompurified by silica gel column chromatography (eluent; methylene chloride:methanol=30:1 v/v)
  3. customrecrystallized from a mixed solvent of n-hexane-ethyl acetate

Sources & evidence

ORD record
ord-95efa418d9404442991ea5d563c9c08d
Source dataset
uspto-grants-2003_02
Patent number
US06515129B1

Reaction notes

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