HCID 66580009, compound → HCID 66580078, compound

HRID 239648Notes

Reaction equation

HRID 239648 reaction equation
[NH2:1][C:2]1[N:7]=[CH:6][N:5]=[C:4]2[N:8]([CH2:19][C:20]3[O:21][C:22]4[C:27]([C:28](=[O:36])[C:29]=3[C:30]3[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=3)=[CH:26][CH:25]=[CH:24][CH:23]=4)[N:9]=[C:10]([C:11]3[CH:16]=[CH:15][CH:14]=[C:13]([O:17]C)[CH:12]=3)[C:3]=12>ClCCl.B(Br)(Br)Br>[NH2:1][C:2]1[N:7]=[CH:6][N:5]=[C:4]2[N:8]([CH2:19][C:20]3[O:21][C:22]4[C:27]([C:28](=[O:36])[C:29]=3[C:30]3[CH:31]=[CH:32][CH:33]=[CH:34][CH:35]=3)=[CH:26][CH:25]=[CH:24][CH:23]=4)[N:9]=[C:10]([C:11]3[CH:16]=[CH:15][CH:14]=[C:13]([OH:17])[CH:12]=3)[C:3]=12

Participants

4

Reactant 1

HCID 66580009HCID 66580009, compound

Product 1

HCID 66580078HCID 66580078, compoundYield 27.5%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolvent2×HCID 25134Boron tribromideSolvent

Procedure

To a solution of example 52 (0.150 g, 0.315 mmoles) in dichloromethane (30 ml), BBr3 (1M in dichloromethane, 1.5 ml) was added at 0° C. and the reaction mixture was warmed to RT and then stirred for 12 h. The reaction mixture was quenched with 1.5N HCl solution and extracted with dichloromethane. The organic layer was dried over sodium sulphate and concentrated. The crude product was purified by column chromatography with methanol: dichloromethane to afford the title compound as light yellow solid (0.040 g, 27% yield). MP: 154-158° C. 1H-NMR (δ ppm, DMSO-D6, 400 MHz): δ 9.69(s,1H), 8.22(s, 1H), 8.06(dd, J=7.8,1.2 Hz, 1H), 7.49(t, J=7.3 Hz, 1H), 7.44(d, J=8.5 Hz, 1H), 7.37-7.29(m, 6H), 7.03 (d, J=7.9 Hz, 2H), 6.86(dd, J=8.3,1.6 Hz, 1H), 5.49(s, 2H). Mass: 462.03(M++1).

Workup

  1. customThe reaction mixture was quenched with 1.5N HCl solution
  2. extractionextracted with dichloromethane
  3. dry with materialThe organic layer was dried over sodium sulphate
  4. concentrationconcentrated
  5. customThe crude product was purified by column chromatography with methanol

Sources & evidence

ORD record
ord-75840a1fc18b49b991da698a6f1cba92
Source dataset
uspto-grants-2014_02
Patent number
US08642607B2

Reaction notes

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