Tetrahydrofuran → HCID 53729990, compound

HRID 1379549Notes

Reaction equation

HRID 1379549 reaction equation
Cl[C:2]1[CH:11]=[N:10][C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[N:3]=1.[C:12](=[O:15])([O-])[O-].[Na+].[Na+].[CH2:18]1[CH2:22]O[CH2:20][CH2:19]1>C(Cl)(Cl)Cl.[Pd]>[CH3:4][N:3]1[C@H:2]2[C@@:18]([CH3:22])([C:18]3[CH:22]=[CH:7][C:6]([C:2]4[CH:11]=[N:10][C:9]5[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=5)[N:3]=4)=[CH:5][C:19]=3[CH2:20][CH2:11]2)[CH2:19][CH2:20][C:12]1=[O:15]

Participants

6

Reactant 3

HCID 8028TetrahydrofuranHCID 10340Sodium CarbonateHCID 2389382-Chloroquinoxaline

Product 1

HCID 53729990HCID 53729990, compoundYield 67%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 6212ChloroformSolvent

Procedure

A 15 mL round bottom flask was charged with (+)-(4aR)-(10bR)-4-methyl-10b-methyl-1,2,3,4,4a,5,6,10b-octahydrobenzo[f]quinolin-3-one-8-boronic acid (187 mg, 0.65 mmol), tetrakis (triphenylphosphine)palladium(0) (23 mg, 0.02 mmol), 2-chloroquinoxaline (107 mg, 0.65 mmol), 0.65 mL of 2M sodium carbonate solution and 2 mL of THF, fitted with a reflux condenser, and the stirred mixture was heated at 80°, under nitrogen, for 16 h. Added an additional 23 mg of the palladium reagent, and let stir an additional 16 h. The mixture was cooled, diluted with chloroform (75 mL) and washed with brine (2×25 mL). The combined organic extracts were dried over sodium sulfate, concentrated, and purified by silica gel chromatography (ethyl acetate eluent) to give 156 mg (67%) of the title compound as a foam. mp 129°-135°. FDMS: m/e=357. α[D]589 =+72.94 (c=0.63, chloroform).

Workup

  1. customfitted with a reflux condenser
  2. temperaturethe stirred mixture was heated at 80°, under nitrogen, for 16 h
  3. temperatureThe mixture was cooled
  4. washwashed with brine (2×25 mL)
  5. dry with materialThe combined organic extracts were dried over sodium sulfate
  6. concentrationconcentrated
  7. custompurified by silica gel chromatography (ethyl acetate eluent)

Sources & evidence

ORD record
ord-f43a8b527b1a4136800cc243da54964d
Source dataset
uspto-grants-1997_09
Patent number
US05670514

Reaction notes

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