2,4,6-Trifluorobenzoyl chloride → HCID 69351067, compound

HRID 970747Notes

Reaction equation

HRID 970747 reaction equation
[F:1][C:2]1[CH:10]=[C:9]([F:11])[CH:8]=[C:7]([F:12])[C:3]=1[C:4]([Cl:6])=[O:5].[CH3:13][N:14]([CH3:28])[CH:15]1[CH2:20][CH2:19][C:18]([C:21]2[N:26]=[C:25]([NH2:27])[CH:24]=[CH:23][CH:22]=2)=[CH:17][CH2:16]1>N1C=CC=CC=1.Cl>[ClH:6].[ClH:6].[CH3:13][N:14]([CH3:28])[CH:15]1[CH2:20][CH2:19][C:18]([C:21]2[N:26]=[C:25]([NH:27][C:4](=[O:5])[C:3]3[C:2]([F:1])=[CH:10][C:9]([F:11])=[CH:8][C:7]=3[F:12])[CH:24]=[CH:23][CH:22]=2)=[CH:17][CH2:16]1

Participants

5

Reactant 2

HCID 1448952,4,6-Trifluorobenzoyl chloride2×HCID 588523656-(4-Dimethylamino-cyclohex-1-enyl)-pyridin-2-ylamine

Product 1

HCID 69351067HCID 69351067, compoundYield 49%

Reagents, catalysts & solvents 2

HCID 313Hydrochloric AcidSolventHCID 1049PyridineSolvent

Conditions

Temperature
55 °C

Procedure

Add 2,4,6-trifluorobenzoyl chloride (117 mg, 0.60 mmol) to a solution of 6-(4-dimethylamino-cyclohex-1-enyl)-pyridin-2-ylamine, isomer 1 (preparation 10, 100 mg, 0.46 mmol) in pyridine (6 mL) and heat at 55° C. overnight. Re-add another portion of 2,4,6-trifluorobenzoyl chloride (50 mg, 0.26 mmol) and heat at 65° C. for 4 hr. Remove volatiles under reduced pressure, dissolve the residue in 1N HCl, extract twice with ethyl ether. Adjust aqueous layer to pH>11 with 5N NaOH. Extract the aqueous layer there times with DCM. Combine organic layers, dry over sodium sulfate, filter and concentrate to give a residue. Purify the residue by chromatography (silica gel, 5% 2M NH3/MeOH in DCM) to provide the free amine of the title compound as a colorless oil (84 mg, 49%): MS (ion spray): m/z=376.2 (M+H)+; 1H NMR (CDCl3): δ 8.91 (s, br, 1H), 8.20 (d, 1H), 7.73 (t, 1H), 7.14 (d, 1H), 6.71 (m, 2H), 6.61 (m, 1H), 2.65 (m, 1H), 2.44 (m, 3H), 2.35 (s, 6H), 2.12 (m, 2H), 1.53 (m, 1H). Using a salt formation method similar to that in example 1 provides the di-hydrochloride salt. Di-hydrochloride salt: Anal. cal'd for C20H20F3N3O.2HCl: C, 53.58; H, 4.95; N, 9.37. Found: C, 53.42; H, 4.91; N, 9.23.

Workup

  1. extractionextract twice with ethyl ether
  2. extractionExtract the aqueous layer there times with DCM
  3. dry with materialCombine organic layers, dry over sodium sulfate
  4. filtrationfilter
  5. concentrationconcentrate
  6. customto give a residue
  7. customPurify the residue by chromatography (silica gel, 5% 2M NH3/MeOH in DCM)

Sources & evidence

ORD record
ord-a40fa0fc19924724b828155c59d974c5
Source dataset
uspto-grants-2007_12
Patent number
US07312236B2

Reaction notes

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