Acetic Acid → HCID 58529518, compound

HRID 1972897Notes

Reaction equation

HRID 1972897 reaction equation
[CH2:1]([N:8]1[CH:16]=[C:15]2[C:10]([CH:11]=[C:12]([C:17]3[CH:18]=[C:19]([CH:27]4[CH2:32][CH2:31][NH:30][CH2:29][CH2:28]4)[N:20]4[C:25]=3[C:24]([NH2:26])=[N:23][CH:22]=[N:21]4)[CH:13]=[CH:14]2)=[N:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.CC(O)=O.C(O[C:40]1(O[Si](C)(C)C)[CH2:42][CH2:41]1)C.C([BH3-])#N.[Na+]>CO>[CH2:1]([N:8]1[CH:16]=[C:15]2[C:10]([CH:11]=[C:12]([C:17]3[CH:18]=[C:19]([CH:27]4[CH2:32][CH2:31][N:30]([CH:40]5[CH2:42][CH2:41]5)[CH2:29][CH2:28]4)[N:20]4[C:25]=3[C:24]([NH2:26])=[N:23][CH:22]=[N:21]4)[CH:13]=[CH:14]2)=[N:9]1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 2734686(1-Ethoxycyclopropoxy)trimethylsilaneHCID 5003444Sodium cyanoborohydrideHCID 16066662HCID 16066662, compound

Product 1

HCID 58529518HCID 58529518, compoundYield 51%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Conditions

Temperature
60 °C

Procedure

To a solution of 5-(2-benzyl-2H-indazol-6-yl)-7-piperidin-4-ylpyrrolo[2,1-f][1,2,4]triazin-4-amine (85 mg, 0.20 mmol) in MeOH (2.25 mL) containing 3 Å molecular sieves was added AcOH (114 μL, 2.00 mmol), [(1-ethoxycyclopropyl)oxy]trimethylsilane (241 μL, 1.20 mmol) and sodium cyanoborohydride (57 mg, 0.90 mmol). The reaction was stirred at 60° C. for 17 h. The mixture was quenched with the addition of saturated, aqueous NaHCO3 (10 mL) and was extracted with EtOAc (3×15 mL). The combined organic layers were washed with brine, dried (Na2SO4) and concentrated. The residue was purified by preparative HPLC using a gradient elution from 15% to 45% acetonitrile in water followed by filtration through an acidic resin, washing with MeOH. The product was eluted with 2M NH3 in MeOH and the filtrate was concentrated to provide 47 mg (51%) of the desired product. 1H NMR (400 MHz, DMSO-d6) δ 825 (s, 1 H), 7.60 (s, 1 H), 7.50 (d, 1 H), 7.28 (s, 1 H), 6.98-7.08 (m, 5 H), 6.84 (dd, 1 H), 6.27 (s, 1 H), 5.35 (s, 2 H), 3.04 (s, 2 H), 2.72 (s, 2 H), 1.99 (s, 2 H), 1.66 (s, 2 H), 1.27-1.38 (m, 2 H), 0.13 (s, 1 H), 0.11 (d, 1 H), −0.03-0.03 (m, 2 H); ES-MS m/z 464.32 [M+H]+, HPLC RT (min) 1.24.

Workup

  1. customThe mixture was quenched with the addition of saturated, aqueous NaHCO3 (10 mL)
  2. extractionwas extracted with EtOAc (3×15 mL)
  3. washThe combined organic layers were washed with brine
  4. dry with materialdried (Na2SO4)
  5. concentrationconcentrated
  6. customThe residue was purified by preparative HPLC
  7. washa gradient elution from 15% to 45% acetonitrile in water
  8. filtrationfollowed by filtration through an acidic resin
  9. washwashing with MeOH
  10. washThe product was eluted with 2M NH3 in MeOH
  11. concentrationthe filtrate was concentrated

Sources & evidence

ORD record
ord-8504deed5f714a838a09b9d27c630a4d
Source dataset
uspto-grants-2013_04
Patent number
US08431695B2

Reaction notes

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