Carbon tetrabromide → HCID 66988630, compound

HRID 1944918Notes

Reaction equation

HRID 1944918 reaction equation
O[CH2:2][CH2:3][CH2:4][C:5]#[C:6][C:7]1[CH:8]=[C:9]([NH:13][C:14]([C:16]2[CH:17]=[C:18]([S:22]([C:25]3[CH:26]=[C:27]4[C:32](=[C:33]([CH3:35])[CH:34]=3)[N:31]=[CH:30][C:29]([C:36]([NH2:38])=[O:37])=[C:28]4[NH:39][C:40]3[CH:45]=[CH:44][CH:43]=[C:42]([O:46][CH3:47])[CH:41]=3)(=[O:24])=[O:23])[CH:19]=[CH:20][CH:21]=2)=[O:15])[CH:10]=[CH:11][CH:12]=1.C(Br)(Br)(Br)[Br:49].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>ClCCl.O1CCCC1>[Br:49][CH2:2][CH2:3][CH2:4][C:5]#[C:6][C:7]1[CH:8]=[C:9]([NH:13][C:14]([C:16]2[CH:17]=[C:18]([S:22]([C:25]3[CH:26]=[C:27]4[C:32](=[C:33]([CH3:35])[CH:34]=3)[N:31]=[CH:30][C:29]([C:36]([NH2:38])=[O:37])=[C:28]4[NH:39][C:40]3[CH:45]=[CH:44][CH:43]=[C:42]([O:46][CH3:47])[CH:41]=3)(=[O:24])=[O:23])[CH:19]=[CH:20][CH:21]=2)=[O:15])[CH:10]=[CH:11][CH:12]=1

Participants

6

Reactant 3

HCID 11205Carbon tetrabromide3×HCID 11776Triphenylphosphine3×HCID 669883546-((3-((3-(5-Hydroxypent-1-yn-1-yl)phenyl)carbamoyl)phenyl)sulfonyl)-4-((3-methoxyphenyl)amino)-8-methylquinoline-3-carboxamide

Product 1

HCID 66988630HCID 66988630, compoundYield 49.2%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8028TetrahydrofuranSolvent

Procedure

A suspension of Intermediate 77 (0.65 g, 1.0 mmol) and carbon tetrabromide (1.0 g, 3.0 mmol) in dichloromethane (14 mL) was sonicated for 5 minutes and then cooled in an ice-water bath. Following the addition, via syringe, of a triphenylphosphine (0.52 g, 2.0 mmol) solution in tetrahydrofuran, the cooling bath was removed, allowing the mixture to stir overnight at room temperature. The mixture was quenched with ethanol and concentrated to foam under reduced pressure. The foam was taken up in tetrahydrofuran (15 mL) and treated as before with carbon tetrabromide (3.0 mmol) and triphenylphosphine (2.0 mmol). After stirring overnight at room temperature, the mixture was concentrated under reduced pressure. The crude material was again taken up in tetrahydrofuran (15 mL) and treated as before with carbon tetrabromide (3.0 mmol) and triphenylphosphine (2.0 mmol). After stirring overnight at room temperature, the mixture was concentrated under reduced pressure. The residue was taken up a suspension in acetone and filtered. The concentrated filtrate was purified via automated flash silica gel chromatography, using a 40 g Silicycle SiliSep flash column (hexanes/ethyl acetate). Concentration of the desired fractions under reduced pressure provided the title compound as straw-colored foam (0.35 g, 48%). ES/MS calcd. for C36H32BrN4O5S+ 711.1. Found m/z=711.2 (M+H)+.

Workup

  1. customwas sonicated for 5 minutes
  2. temperaturecooled in an ice-water bath
  3. additionthe addition
  4. customThe mixture was quenched with ethanol
  5. concentrationconcentrated to foam under reduced pressure
  6. stirringAfter stirring overnight at room temperature
  7. concentrationthe mixture was concentrated under reduced pressure
  8. stirringAfter stirring overnight at room temperature
  9. concentrationthe mixture was concentrated under reduced pressure
  10. filtrationfiltered
  11. customThe concentrated filtrate was purified via automated flash silica gel chromatography

Sources & evidence

ORD record
ord-7ec958907f20468185d4843770009130
Source dataset
uspto-grants-2013_03
Patent number
US08394829B2

Reaction notes

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