Tetrahydrofuran → (4-{4-[6-(6-Trifluoromethyl-pyridin-3-ylamino)-pyridazin-3-yl]-phenyl}-cyclohexyl)-acetonitrile

HRID 76076Notes

Reaction equation

HRID 76076 reaction equation
[F:1][C:2]([F:33])([F:32])[C:3]1[N:8]=[CH:7][C:6]([NH:9][C:10]2[N:15]=[N:14][C:13]([C:16]3[CH:21]=[CH:20][C:19]([CH:22]4[CH2:27][CH2:26][CH:25]([CH2:28][C:29]([NH2:31])=O)[CH2:24][CH2:23]4)=[CH:18][CH:17]=3)=[CH:12][CH:11]=2)=[CH:5][CH:4]=1.C1COCC1.FC(F)(F)C(OC(=O)C(F)(F)F)=O>C(N(CC)CC)C>[F:33][C:2]([F:1])([F:32])[C:3]1[N:8]=[CH:7][C:6]([NH:9][C:10]2[N:15]=[N:14][C:13]([C:16]3[CH:21]=[CH:20][C:19]([CH:22]4[CH2:23][CH2:24][CH:25]([CH2:28][C:29]#[N:31])[CH2:26][CH2:27]4)=[CH:18][CH:17]=3)=[CH:12][CH:11]=2)=[CH:5][CH:4]=1

Participants

5

Reactant 3

HCID 8028TetrahydrofuranHCID 9845Trifluoroacetic anhydrideHCID 666159412-(4-{4-[6-(6-Trifluoromethyl-pyridin-3-ylamino)-pyridazin-3-yl]-phenyl}-cyclohexyl)-acetamide

Product 1

HCID 66615964(4-{4-[6-(6-Trifluoromethyl-pyridin-3-ylamino)-pyridazin-3-yl]-phenyl}-cyclohexyl)-acetonitrile

Reagents, catalysts & solvents 1

HCID 8471TriethylamineSolvent

Procedure

To a mixture of 2-(4-{4-[6-(6-Trifluoromethyl-pyridin-3-ylamino)-pyridazin-3-yl]-phenyl}-cyclohexyl)-acetamide (0.18 g, 0.41 mmol, 1.0 equiv) in 3 Ml THF was added trifluoroacetic anhydride (0.068 Ml, 0.49 mmol, 1.2 equiv) followed by triethylamine (0.12 Ml, 0.90 mmol, 2.2 equiv). The reaction was stirred at ambient temperature overnight, and then concentrated in vacuo. Purification by silica gel chromatography (10-50% EtOAc in hexanes) afforded the title compound: 1H NMR (400 MHz, DMSO-d6) δ ppm 1.39-1.50 (m, J=12.82, 12.54, 12.54, 3.54 Hz, 2H) 1.69-1.80 (m, J=12.88, 12.69, 12.69, 3.41 Hz, 2H) 1.86-1.97 (m, J=11.91, 11.91, 6.06, 5.87, 2.91 Hz, 1H) 2.09 (d, J=15.92 Hz, 1H) 2.09 (dd, J=5.94, 3.66 Hz, 3H) 2.76 (t, J=3.03 Hz, 1H) 7.53 (d, J=9.35 Hz, 1H) 7.59 (d, J=8.34 Hz, 2H) 8.08 (d, J=8.59 Hz, 1H) 8.20 (d, J=8.34 Hz, 2H) 8.30 (d, J=9.35 Hz, 1H) 8.91 (dd, J=8.59, 2.27 Hz, 1H) 9.16 (d, J=2.53 Hz, 1H) 10.25 (s, 1H); (M+H)+438.3.

Workup

  1. concentrationconcentrated in vacuo
  2. customPurification by silica gel chromatography (10-50% EtOAc in hexanes)

Sources & evidence

ORD record
ord-c40ce1f01f6e468c9a8a89e807f46e39
Source dataset
uspto-grants-2014_09
Patent number
US08835451B2

Reaction notes

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