Potassium Phosphate, Tribasic → N-(cyclopropylmethyl)-5-(3-formyl-1-(tetrahydro-2H-pyran-2-yl)-1H-indazol-5-yl)nicotinamide

HRID 1529192Notes

Reaction equation

HRID 1529192 reaction equation
I[C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[N:7]([CH:11]1[CH2:16][CH2:15][CH2:14][CH2:13][O:12]1)[N:6]=[C:5]2[CH:17]=[O:18].B1(B2OC(C)(C)C(C)(C)O2)OC(C)(C)C(C)(C)O1.CC([O-])=O.[K+].[O-]P([O-])([O-])=O.[K+].[K+].[K+].Br[C:51]1[CH:52]=[N:53][CH:54]=[C:55]([CH:63]=1)[C:56]([NH:58][CH2:59][CH:60]1[CH2:62][CH2:61]1)=[O:57]>C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2].C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.O.CN(C=O)C>[CH:60]1([CH2:59][NH:58][C:56](=[O:57])[C:55]2[CH:63]=[C:51]([C:2]3[CH:3]=[C:4]4[C:8](=[CH:9][CH:10]=3)[N:7]([CH:11]3[CH2:16][CH2:15][CH2:14][CH2:13][O:12]3)[N:6]=[C:5]4[CH:17]=[O:18])[CH:52]=[N:53][CH:54]=2)[CH2:62][CH2:61]1

Participants

10

Reactant 5

HCID 62657Potassium Phosphate, TribasicHCID 517044Potassium AcetateHCID 2733548Bis(pinacolato)diboraneHCID 205807365-iodo-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole-3-carbaldehydeHCID 401425785-bromo-N-(cyclopropylmethyl)nicotinamide

Product 1

HCID 58138439N-(cyclopropylmethyl)-5-(3-formyl-1-(tetrahydro-2H-pyran-2-yl)-1H-indazol-5-yl)nicotinamideYield 90%

Reagents, catalysts & solvents 4

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

A solution of 5-iodo-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole-3-carbaldehyde (I) (1.068 g, 3.0 mmol), bis(pinacolato)diboron (0.914 g, 3.6 mmol), KOAc (0.883 g, 9.0 mmol) and dry DMF (20 mL) was purged with nitrogen. PdCl2(dppf)2 was added to the reaction and purged again with nitrogen. The solution was heated at 80° C. for 2 h. Once TLC showed the disappearance of (I), the solution was cooled to r.t. To this solution was added K3PO4 (0.955 g, 4.5 mmol), 5-bromo-N-(cyclopropylmethyl) nicotinamide (XVII) (0.765 g, 3.0 mmol), Pd(PPh3)4 (104 mg, 0.09 mmol) and water (2 mL). The solution was purged with nitrogen and heated at 90° C. for 3 h. The reaction was passed through a pad of Celite and then concentrated under reduced pressure. The residue was dissolved in DCM and washed with water and brine, dried over MgSO4 and then evaporated under vacuum. The crude product was purified on a silica gel column (100% EtOAc→2:98 MeOH:DCM) to give N-(cyclopropylmethyl)-5-(3-formyl-1-(tetrahydro-2H-pyran-2-yl)-1H-indazol-5-yl)nicotinamide (XXXI) as a yellow solid (1.09 g, 2.7 mmol, 90% yield). 1H NMR (DMSO-d6) δ ppm 0.20-0.31 (m, 2H), 0.35-0.57 (m, 2H), 1.65 (m, 2H), 1.74-1.87 (m, 1H), 2.10 (d, J=12.06 Hz, 2H), 2.35-2.44 (m, 1H), 3.10-3.27 (m, 3H), 3.78-3.99 (m, 2H), 6.14 (d, J=7.35 Hz, 1H), 7.90-8.14 (m, 2H), 8.50 (d, J=12.5, 2H), 9.05 (dd, J=14.60, 1.98 Hz, 2H), 10.25 (s, 1H); ESIMS found C2H24N4O3 m/z 405 (M+H).

Workup

  1. custompurged again with nitrogen
  2. temperaturethe solution was cooled to r.t
  3. customThe solution was purged with nitrogen
  4. temperatureheated at 90° C. for 3 h
  5. concentrationconcentrated under reduced pressure
  6. dissolutionThe residue was dissolved in DCM
  7. washwashed with water and brine
  8. dry with materialdried over MgSO4
  9. customevaporated under vacuum
  10. customThe crude product was purified on a silica gel column (100% EtOAc→2:98 MeOH:DCM)

Sources & evidence

ORD record
ord-4e013510eb044efe9ff158acd3db77e5
Source dataset
uspto-grants-2015_07
Patent number
US09090613B2

Reaction notes

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