Water → 1-[9-Chloro-1-(2,4,6-trichlorophenyl)-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazol-6-yl]-2,2,2-trifluoroethanamine

HRID 1628931Notes

Reaction equation

HRID 1628931 reaction equation
[N:1]([CH:4]([C:9]1[C:14]2[N:15]3[CH2:21][CH2:20][CH2:19][N:18]([C:22]4[C:27]([Cl:28])=[CH:26][C:25]([Cl:29])=[CH:24][C:23]=4[Cl:30])[C:16]3=[N:17][C:13]=2[C:12]([Cl:31])=[CH:11][CH:10]=1)[C:5]([F:8])([F:7])[F:6])=[N+]=[N-].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.O>O1CCCC1.C(OCC)(=O)C>[Cl:31][C:12]1[C:13]2[N:17]=[C:16]3[N:18]([C:22]4[C:27]([Cl:28])=[CH:26][C:25]([Cl:29])=[CH:24][C:23]=4[Cl:30])[CH2:19][CH2:20][CH2:21][N:15]3[C:14]=2[C:9]([CH:4]([NH2:1])[C:5]([F:6])([F:7])[F:8])=[CH:10][CH:11]=1

Participants

6

Reactant 3

HCID 962WaterHCID 11776TriphenylphosphineHCID 577860316-(1-Azido-2,2,2-trifluoroethyl)-9-chloro-1-(2,4,6-trichlorophenyl)-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole

Product 1

HCID 577858171-[9-Chloro-1-(2,4,6-trichlorophenyl)-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazol-6-yl]-2,2,2-trifluoroethanamineYield 95%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
60 °C

Procedure

A mixture of 6-(1-azido-2,2,2-trifluoroethyl)-9-chloro-1-(2,4,6-trichlorophenyl)-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole (286 mg, 0.560 mmol), triphenylphosphine (220 mg, 0.839 mmol) and water (0.560 mL) in tetrahydrofuran (5.6 mL) was stirred at 60° C. for 1 day. After the mixture was diluted with ethyl acetate, the resultant mixture was extracted with 1N hydrochloric acid. The extract was washed with diethyl ether and neutralized with aqueous saturated sodium hydrogen carbonate. The resultant mixture was extracted with ethyl acetate. The extract was washed with brine, dried over anhydrous sodium sulfate, filtered and concentrated in vacuo to give the title compound as a colorless solid (257 mg, 0.532 mmol, 95%).

Workup

  1. extractionthe resultant mixture was extracted with 1N hydrochloric acid
  2. washThe extract was washed with diethyl ether and neutralized with aqueous saturated sodium hydrogen carbonate
  3. extractionThe resultant mixture was extracted with ethyl acetate
  4. washThe extract was washed with brine
  5. dry with materialdried over anhydrous sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-a68223a8f8704a0987ba034c4cf1d255
Source dataset
uspto-grants-2014_07
Patent number
US08785460B2

Reaction notes

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