Formaldehyde → (3-(3-(4-Benzyloxy-benzyl)-isoxazol-5-yl)-pyridin-2-yl)-dimethyl-amine

HRID 640561Notes

Reaction equation

HRID 640561 reaction equation
[CH2:1]([O:8][C:9]1[CH:27]=[CH:26][C:12]([CH2:13][C:14]2[CH:18]=[C:17]([C:19]3C(N)=[N:21][CH:22]=[CH:23][CH:24]=3)[O:16][N:15]=2)=[CH:11][CH:10]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C=O.N1C=CC=CC=1C.B.FC(F)(F)C(O)=O.[CH3:45][N:46]([CH3:49])[CH:47]=O>C(O)(=O)C>[CH2:1]([O:8][C:9]1[CH:27]=[CH:26][C:12]([CH2:13][C:14]2[CH:18]=[C:17]([C:19]3[C:47]([N:46]([CH3:49])[CH3:45])=[N:21][CH:22]=[CH:23][CH:24]=3)[O:16][N:15]=2)=[CH:11][CH:10]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

7

Reactant 5

HCID 712FormaldehydeHCID 6228DimethylformamideHCID 6422Trifluoroacetic acidHCID 160615083-(3-(4-Benzyloxy-benzyl)-isoxazol-5-yl)-pyridin-2-ylamineHCID 16217944Borane;2-methylpyridine

Product 1

HCID 59255259(3-(3-(4-Benzyloxy-benzyl)-isoxazol-5-yl)-pyridin-2-yl)-dimethyl-amineYield 21%

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Procedure

To a mixture of 3-(3-(4-benzyloxy-benzyl)-isoxazol-5-yl)-pyridin-2-ylamine (50 mg, 0.14 mmol) described in Example 1 and N,N-dimethylformamide (0.5 mL) were added a formaldehyde aqueous solution (34 mg, 0.42 mmol, content: 37%), α-picoline-borane (37 mg, 0.35 mmol), and acetic acid (50 μL), which was stirred overnight at the same temperature. Trifluoroacetic acid (50 μL) was added to the reaction mixture, which was stirred for 30 minutes at room temperature. The solvent was evaporated under a reduced pressure, and the residue thus obtained was purified by reverse-phase high performance liquid chromatography (using an acetonitrile-water mobile phase containing 0.1% trifluoroacetic acid) to obtain the title compound (15 mg, 21%) as a trifluoroacetate.

Workup

  1. stirringwas stirred for 30 minutes at room temperature
  2. customThe solvent was evaporated under a reduced pressure
  3. customthe residue thus obtained
  4. customwas purified by reverse-phase high performance liquid chromatography (
  5. additioncontaining 0.1% trifluoroacetic acid)

Sources & evidence

ORD record
ord-7c50cc1a09fe41a0973811b356acc899
Source dataset
uspto-grants-2010_04
Patent number
US07691882B2

Reaction notes

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