Acetaldehyde → HCID 58204375, compound

HRID 886327Notes

Reaction equation

HRID 886327 reaction equation
F[C:2](F)(F)[C:3](O)=O.[CH:8]([N:11]1[C:15]([C:16]2[N:25]=[C:24]3[N:18]([CH2:19][CH2:20][O:21][C:22]4[CH:29]=[C:28]([CH:30]5[CH2:35][CH2:34][NH:33][CH2:32][CH2:31]5)[CH:27]=[CH:26][C:23]=43)[CH:17]=2)=[N:14][CH:13]=[N:12]1)([CH3:10])[CH3:9].C(=O)C.N1C(O[BH3-])=NN=1.[Na+].C(Cl)Cl>ClCCCl.C(O)(=O)C>[CH2:2]([N:33]1[CH2:34][CH2:35][CH:30]([C:28]2[CH:27]=[CH:26][C:23]3[C:24]4[N:18]([CH:17]=[C:16]([C:15]5[N:11]([CH:8]([CH3:10])[CH3:9])[N:12]=[CH:13][N:14]=5)[N:25]=4)[CH2:19][CH2:20][O:21][C:22]=3[CH:29]=2)[CH2:31][CH2:32]1)[CH3:3]

Participants

7

Reactant 4

HCID 177AcetaldehydeHCID 6344DichloromethaneHCID 670507222-(2-Isopropyl-2H-[1,2,4]triazol-3-yl)-8-piperidin-4-yl-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulene trifluoroacetic acid saltHCID 131729890HCID 131729890, compound

Product 1

HCID 58204375HCID 58204375, compoundYield 12%

Reagents, catalysts & solvents 2

HCID 176Acetic AcidCatalystHCID 111,2-DichloroethaneSolvent

Procedure

To a stirred suspension of 2-(2-isopropyl-2H-[1,2,4]triazol-3-yl)-8-piperidin-4-yl-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulene trifluoro acetate (189 mg, 0.37 mmol) in DCE (3 mL) was added acetic acid (3 drops, catalytic) acetaldehyde (0.023 mL, 0.41 mmol) and sodium triazetoxyborohydride (94 mg, 0.44 mmol). After stirring for 2 h at RT DCM was added and the mixture washed with saturated aqueous sodium hydrogen carbonate, water and then brine before being dried (MgSO4), filtered and concentrated in vacuo. The resultant residue was subjected to flash chromatography (SiO2, gradient 0 to 20% methanol in DCM) then freeze dried from methanol/water and triturated in petroleum ether to give 314 as a brown solid (18 mg, 12%). LCMS: RT=2.73 min, [M+H]+=407. 1H NMR 400 MHz (DMSO-d) δ: 8.32 (1H, d, J=8.29 Hz), 7.90 (2H, d, J=2.38 Hz), 7.06 (1H, d, J=8.41 Hz), 6.90 (1H, s), 5.90-5.89 (1H, m), 4.49 (4H, d, J=7.47 Hz), 2.97 (2H, d, J=10.98 Hz), 2.34 (2H, q, J=7.20 Hz), 1.95 (2H, t, J=11.47 Hz), 1.76 (2H, d, J=12.54 Hz), 1.72-1.54 (3H, m), 1.48 (6H, d, J=6.59 Hz), 1.02 (3H, t, J=7.20 Hz)

Workup

  1. additionwas added
  2. washthe mixture washed with saturated aqueous sodium hydrogen carbonate, water
  3. dry with materialbrine before being dried (MgSO4)
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. dry with materialthen freeze dried from methanol/water
  7. customtriturated in petroleum ether

Sources & evidence

ORD record
ord-012b37eb9132432aa9af63b8fbc54d0f
Source dataset
uspto-grants-2012_08
Patent number
US08242104B2

Reaction notes

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