Triethylamine → HCID 178425142, compound

HRID 1479749Notes

Reaction equation

HRID 1479749 reaction equation
[CH3:1][CH:2]1[C:6]2[CH:7]=[CH:8][C:9]([C:11]([OH:13])=O)=[CH:10][C:5]=2[O:4][CH2:3]1.F[P-](F)(F)(F)(F)F.N1(OC(N(C)C)=[N+](C)C)C2N=CC=CC=2N=N1.C(N(CC)CC)C.[NH2:45][CH2:46][C:47]1[C:48]([OH:55])=[N:49][C:50]([CH3:54])=[CH:51][C:52]=1[CH3:53]>ClCCl>[OH:55][C:48]1[C:47]([CH2:46][NH:45][C:11]([C:9]2[CH:8]=[CH:7][C:6]3[CH:2]([CH3:1])[CH2:3][O:4][C:5]=3[CH:10]=2)=[O:13])=[C:52]([CH3:53])[CH:51]=[C:50]([CH3:54])[N:49]=1

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 895812133-Methyl-2,3-dihydro-1-benzofuran-6-carboxylic acidHCID 178425242HCID 178425242, compound

Product 1

HCID 178425142HCID 178425142, compoundYield 60%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A solution of 3-methyl-2,3-dihydrobenzofuran-6-carboxylic acid (100 mg, 0.56 mmol) in dichloromethane (50 mL) was added 2-(7-Aza-1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate (35 mg, 0.5 mmol), triethylamine (32 mg, 0.7 mmol), stirred for 30 minutes. Then 3-(aminomethyl)-4,6-dimethylpyridin-2-ol (27 mg, 0.4 mmol) was added and the mixture was stirred at room temperature for 12 hours. The mixture was washed with water (50 mL), dried over sodium sulphate, concentrated. The residue was purified by column chromatography (silica gel, dichloromethane/methanol=20:1) to give the product N-((2-hydroxy-4,6-dimethylpyridin-3-yl)methyl)-3-methyl-2,3-dihydrobenzofuran-6-carboxamide (75 mg, 43%) as white solid. LRMS (M+H+) m/z: calcd 367.23. found 367. HPLC Purity (214 nm): 97%. 1H NMR (300 MHz, CDCl3) δ 7.32-7.27 (m, 2H), 7.12-7.11 (m, 1H), 6.10 (s, 1H), 4.72-4.66 (m, 1H), 4.46 (s, 2H), 4.11-4.05 (m, 1H), 3.56-3.53 (m, 1H), 2.35 (s, 3H), 2.24 (s, 3H), 1.31 (d, J=7.2 Hz, 3H).

Workup

  1. stirringthe mixture was stirred at room temperature for 12 hours
  2. washThe mixture was washed with water (50 mL)
  3. dry with materialdried over sodium sulphate
  4. concentrationconcentrated
  5. customThe residue was purified by column chromatography (silica gel, dichloromethane/methanol=20:1)

Sources & evidence

ORD record
ord-642ca8e2a50b471b8e1b24afa18a1837
Source dataset
uspto-grants-2016_08
Patent number
US09409865B2

Reaction notes

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