Water → 3-Amino-5-phenyl-1-(2,2,2-trifluoroethyl)-1H-benzo[e][1,4]diazepin-2(3H)-one

HRID 609718Notes

Reaction equation

HRID 609718 reaction equation
[N:1]([CH:4]1[C:10](=[O:11])[N:9]([CH2:12][C:13]([F:16])([F:15])[F:14])[C:8]2[CH:17]=[CH:18][CH:19]=[CH:20][C:7]=2[C:6]([C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)=[N:5]1)=[N+]=[N-].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.O>C1COCC1>[NH2:1][CH:4]1[C:10](=[O:11])[N:9]([CH2:12][C:13]([F:16])([F:14])[F:15])[C:8]2[CH:17]=[CH:18][CH:19]=[CH:20][C:7]=2[C:6]([C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)=[N:5]1

Participants

5

Reactant 3

HCID 962WaterHCID 11776TriphenylphosphineHCID 189689903-Azido-5-phenyl-1-(2,2,2-trifluoroethyl)-1H-benzo[e][1,4]diazepine-2-one

Product 1

HCID 107353833-Amino-5-phenyl-1-(2,2,2-trifluoroethyl)-1H-benzo[e][1,4]diazepin-2(3H)-one

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a stirring solution of 3-azido-5-phenyl-1-(2,2,2-trifluoroethyl)-1H-benzo[e][1,4]diazepine-2-one (crude from above) in 1.3 L THF was added triphenylphosphine (109 g, 0.417 mol) and water (150 mL). This was stirred overnight at ambient temperature The reaction was then concentrated under reduced pressure, taken up in 1N HCl (1500 mL), and extracted with ethyl ether (2×500 mL). The combined organics were back extracted with 1N HCl (1×300 mL). The combined aqueous layers were back extracted with ethyl acetate (100 mL) and then basefied with sat. NaHCO3 (100 mL) and 50% NaOH until pH=10. This was extracted with ethyl acetate (2×500 mL). The combined ethyl acetate fractions were dried over Na2SO4, evaporated under reduced pressure and crystallized from ethyl ether to give the title compound as a powder. MP=141-143° C.;

Workup

  1. concentrationwas then concentrated under reduced pressure
  2. extractionextracted with ethyl ether (2×500 mL)
  3. extractionThe combined organics were back extracted with 1N HCl (1×300 mL)
  4. extractionThe combined aqueous layers were back extracted with ethyl acetate (100 mL)
  5. extractionThis was extracted with ethyl acetate (2×500 mL)
  6. dry with materialThe combined ethyl acetate fractions were dried over Na2SO4
  7. customevaporated under reduced pressure
  8. customcrystallized from ethyl ether

Sources & evidence

ORD record
ord-ff3b3bba10d3475e96a11bd5a40b0f5b
Source dataset
uspto-grants-1999_12
Patent number
US05998407

Reaction notes

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