Acetic Acid → HCID 25159919, compound

HRID 913997Notes

Reaction equation

HRID 913997 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2([CH2:14][O:15][CH2:16][C:17]3[CH:18]=[C:19]([C:27]([F:30])([F:29])[F:28])[CH:20]=[C:21]4[C:25]=3[N:24]([CH3:26])[N:23]=[CH:22]4)[CH2:13][CH2:12][NH:11][CH2:10][CH2:9]2)=[CH:4][CH:3]=1.[C:31]([BH3-])#N.[Na+].C=O.C(O)(=O)C>C(#N)C.C(O)(=O)C>[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2([CH2:14][O:15][CH2:16][C:17]3[CH:18]=[C:19]([C:27]([F:28])([F:29])[F:30])[CH:20]=[C:21]4[C:25]=3[N:24]([CH3:26])[N:23]=[CH:22]4)[CH2:13][CH2:12][N:11]([CH3:31])[CH2:10][CH2:9]2)=[CH:4][CH:3]=1

Participants

7

Reactant 4

HCID 176Acetic AcidHCID 712FormaldehydeHCID 5003444Sodium cyanoborohydrideHCID 25159917HCID 25159917, compound

Product 1

HCID 25159919HCID 25159919, compound

Reagents, catalysts & solvents 2

HCID 176Acetic AcidCatalystHCID 6342AcetonitrileSolvent

Procedure

To a solution of 7-(((4-(4-fluorophenyl)piperidin-4-yl)methoxy)methyl)-1-methyl-5-(trifluoromethyl)-1H-indazole (35 mg, 0.083 mmol) and sodium cyanoborohydride (10.4 mg, 0.166 mmol) in acetonitrile (1 mL) at room temperature was added formalin (50 μL). To this was added 1 drop of acetic acid. After 5 min, a second drop of acetic acid was added and the reaction stirred at room temperature for 15 min. The reaction was concentrated and loaded onto a strong cation exchange cartridge in methanol. The cartridge was washed with several volumes of methanol which were discarded. The product was eluted with 2 M ammonia in methanol and concentrated to give 15 mg (42%). 1H-NMR (CDCl3, 500 MHz) δ 8.01 (s, 1H), 7.95 (s, 1H), 7.29 (s, 1H), 7.14 (m, 2H), 6.87 (m, 2H), 4.68 (s, 2H), 3.98 (s, 3H), 3.44 (s, 2H), 2.50 (m, 2H), 2.00-2.25 (m, 7H), 1.91 (m, 2H); 13C-NMR (CDCl3, 126 MHz) δ 162.2, 160.2, 139.4, 133.9, 128.62, 128.56, 124.8, 124.6 (q, J=272 Hz), 124.5 (q, J=2.9 Hz), 122.6 (q, J=33 Hz), 121.1, 119.7 (q, J=4.8 Hz), 115.0, 114.9, 78.7, 70.5, 51.8, 46.2, 40.2, 38.3, 32.6. Mass spec.: 436.15 (MH)+. Accurate mass spec.: m/z 436.2008 [MH]+, Δ=0.9 ppm.

Workup

  1. concentrationThe reaction was concentrated
  2. washThe cartridge was washed with several volumes of methanol which
  3. washThe product was eluted with 2 M ammonia in methanol
  4. concentrationconcentrated
  5. customto give 15 mg (42%)

Sources & evidence

ORD record
ord-e77adbf313754933ad8a20e612063edd
Source dataset
uspto-grants-2011_09
Patent number
US08026257B2

Reaction notes

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