Benzylamine → HCID 44476094, compound

HRID 1664466Notes

Reaction equation

HRID 1664466 reaction equation
[OH:1][B:2]1[C:6]2[CH:7]=[CH:8][C:9]([O:11][C:12]3[CH:20]=[CH:19][C:15]([C:16]([OH:18])=O)=[CH:14][CH:13]=3)=[CH:10][C:5]=2[CH2:4][O:3]1.CCN=C=NCCCN(C)C.C1C=CC2N(O)N=NC=2C=1.[CH2:42]([NH2:49])[C:43]1[CH:48]=[CH:47][CH:46]=[CH:45][CH:44]=1>CN(C1C=CN=CC=1)C.C(Cl)Cl.O>[CH2:42]([NH:49][C:16](=[O:18])[C:15]1[CH:14]=[CH:13][C:12]([O:11][C:9]2[CH:8]=[CH:7][C:6]3[B:2]([OH:1])[O:3][CH2:4][C:5]=3[CH:10]=2)=[CH:20][CH:19]=1)[C:43]1[CH:48]=[CH:47][CH:46]=[CH:45][CH:44]=1

Participants

8

Reactant 4

HCID 7504BenzylamineHCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 25010450Benzoic acid, 4-[(1,3-dihydro-1-hydroxy-2,1-benzoxaborol-5-yl)oxy]-

Product 1

HCID 44476094HCID 44476094, compound

Reagents, catalysts & solvents 3

HCID 142844-(Dimethylamino)pyridineCatalystHCID 962WaterSolventHCID 6344DichloromethaneSolvent

Procedure

To a 40 mL scintillation vial containing 4-(1-hydroxy-1,3-dihydro-benzo[c][1,2]oxaborol-5-yloxy)-benzoic acid (150 mg, 0.55 mmol, 1.0 eq.), EDCI (157.2 mg, 0.82 mmol, 1.5 eq.), HOBt (111.5 mg, 0.82 mmol, 1.5 eq.) and DMAP (12 mg, 0.1 mmol, 0.2 eq.) in DCM (10.0 mL) was added benzylamine (24 μL, 2.2 mmol, 4.0 eq.) drop wise. The mixture was stirred at room temperature overnight. The mixture was treated with H2O (10 mL) and the layers were separated. The aqueous was extracted with DCM (2×5 mL), combined organic phase was washed with brine (10 mL), dried over MgSO4, filtered and the filtrate was concentrated under reduced pressure. The residue was applied to silica chromatography eluting with MeOH/DCM (0:100 to 10:90) to give N-benzyl-4-(1-hydroxy-1,3-dihydro-benzo[c][1,2]oxaborol-5-yloxy)-benzamide as a white solid. LCMS (m/z) 360 (M+H); 1H NMR (DMSO-d6) δ: 9.01 (t, J=6.0 Hz, 1H), 7.91-8.00 (m, 2H), 7.76 (d, J=7.9 Hz, 1H), 7.29-7.36 (m, 5H), 7.21-7.27 (m, 1H), 7.08-7.13 (m, 2H), 7.02-7.07 (m, 2H), 4.95 (s, 2H), 4.48 (d, J=6.0 Hz, 2H).

Workup

  1. customthe layers were separated
  2. extractionThe aqueous was extracted with DCM (2×5 mL)
  3. washwas washed with brine (10 mL)
  4. dry with materialdried over MgSO4
  5. filtrationfiltered
  6. concentrationthe filtrate was concentrated under reduced pressure
  7. washeluting with MeOH/DCM (0:100 to 10:90)

Sources & evidence

ORD record
ord-1ffc82c8647d4cd4b94f50a0fe05d26f
Source dataset
uspto-grants-2011_10
Patent number
US08039450B2

Reaction notes

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