Trifluoroacetic acid → N-(cyclopropylmethyl)-5-(3-(7-(pyridin-3-yl)-3H-imidazo[4,5-c]pyridin-2-yl)-1H-indazol-5-yl)nicotinamide

HRID 1911228Notes

Reaction equation

HRID 1911228 reaction equation
[CH:1]1([CH2:4][NH:5][C:6](=[O:43])[C:7]2[CH:12]=[C:11]([C:13]3[CH:14]=[C:15]4[C:19](=[CH:20][CH:21]=3)[N:18](C3CCCCO3)[N:17]=[C:16]4[C:28]3[NH:42][C:31]4[CH:32]=[N:33][CH:34]=[C:35]([C:36]5[CH:37]=[N:38][CH:39]=[CH:40][CH:41]=5)[C:30]=4[N:29]=3)[CH:10]=[N:9][CH:8]=2)[CH2:3][CH2:2]1.[SiH](CC)(CC)CC.C(O)(C(F)(F)F)=O>C(Cl)Cl>[CH:1]1([CH2:4][NH:5][C:6](=[O:43])[C:7]2[CH:12]=[C:11]([C:13]3[CH:14]=[C:15]4[C:19](=[CH:20][CH:21]=3)[NH:18][N:17]=[C:16]4[C:28]3[NH:42][C:31]4[CH:32]=[N:33][CH:34]=[C:35]([C:36]5[CH:37]=[N:38][CH:39]=[CH:40][CH:41]=5)[C:30]=4[N:29]=3)[CH:10]=[N:9][CH:8]=2)[CH2:3][CH2:2]1

Participants

5

Reactant 3

HCID 6422Trifluoroacetic acidHCID 12052TriethylsilaneHCID 135987326N-(cyclopropylmethyl)-5-(3-(7-(pyridin-3-yl)-3H-imidazo[4,5-c]pyridin-2-yl)-1-(tetrahydro-2H-pyran-2-yl)-1H-indazol-5-yl)nicotinamide

Product 1

HCID 136055449N-(cyclopropylmethyl)-5-(3-(7-(pyridin-3-yl)-3H-imidazo[4,5-c]pyridin-2-yl)-1H-indazol-5-yl)nicotinamideYield 45.5%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A solution of N-(cyclopropylmethyl)-5-(3-(7-(pyridin-3-yl)-3H-imidazo[4,5-c]pyridin-2-yl)-1-(tetrahydro-2H-pyran-2-yl)-1H-indazol-5-yl)nicotinamide (XXXII) (125 mg, 0.22 mmol) and Et3SiH (87 μL, 0.55 mmol) in DCM (5 mL) was slowly added TFA (2.5 mL). The reaction was stirred at r.t. for 3 h. The reaction was evaporated under vacuum and the residue was treated with water, basified with aq. ammonia. The solids were filtered, washed with cold water and dried. The crude product was heated in MeOH and filtered hot to remove impurities. The hot MeOH solution was allowed to slowly cool to r.t. to produce N-(cyclopropylmethyl)-5-(3-(7-(pyridin-3-yl)-3H-imidazo[4,5-c]pyridin-2-yl)-1H-indazol-5-yl)nicotinamide (3) as a off-white solid (48 mg, 0.10 mmol, 44% yield). 1H NMR (DMSO-d6) δ ppm 0.28 (d, J=4.28 Hz, 2H), 0.42-0.58 (m, 2H), 1.09 (br s, 1H), 3.25 (t, J=6.06 Hz, 2H), 7.50-7.70 (m, 1H), 7.79-8.11 (m, 2H), 8.48-8.68 (m, 1H), 8.69-8.82 (m, 1H), 8.81-8.97 (m, 3H), 9.00-9.18 (m, 2H), 9.46 (br s, 1H); ESIMS found C28H22N8O m/z 487 (M+H).

Workup

  1. customThe reaction was evaporated under vacuum
  2. additionthe residue was treated with water
  3. filtrationThe solids were filtered
  4. washwashed with cold water
  5. customdried
  6. temperatureThe crude product was heated in MeOH
  7. filtrationfiltered hot
  8. customto remove impurities
  9. temperatureto slowly cool to r.t.

Sources & evidence

ORD record
ord-cc0583c7a6d748e58050175cefea973c
Source dataset
uspto-grants-2013_12
Patent number
US08604052B2

Reaction notes

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