Tetrahydrofuran → HCID 53796844, compound

HRID 1379544Notes

Reaction equation

HRID 1379544 reaction equation
Br[C:2]1[CH:11]=[CH:10][CH:9]=[C:8]2[C:3]=1[CH:4]=[CH:5][N:6]=[CH:7]2.[C:12](=[O:15])([O-])[O-].[Na+].[Na+].[CH2:18]1[CH2:22]O[CH2:20][CH2:19]1>C(OCC)(=O)C>[CH3:7][N:6]1[C@H:5]2[C@@:18]([CH3:22])([C:18]3[CH:22]=[CH:11][C:2]([C:2]4[CH:11]=[CH:10][CH:9]=[C:8]5[C:3]=4[CH:4]=[CH:5][N:6]=[CH:7]5)=[CH:3][C:19]=3[CH2:20][CH2:4]2)[CH2:19][CH2:20][C:12]1=[O:15]

Participants

5

Reactant 3

HCID 8028TetrahydrofuranHCID 10340Sodium CarbonateHCID 7364875-Bromoisoquinoline

Product 1

HCID 53796844HCID 53796844, compoundYield 42%

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

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 (178 mg, 0.65 mmol), tetrakis (triphenylphosphine)palladium(0) (23 mg, 0.02 mmol), 5-bromoisoquinoline (135 mg, 0.65 mmol), 0.65 mL of 2M sodium carbonate and 2 mL of THF, fitted with a reflux condenser, and the stirred mixture was heated at 80°, under nitrogen, for 24 h. The mixture was cooled, diluted with ethyl acetate (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 (5% methanol/ethyl acetate eluent) to give 98 mg (42%) of the title compound as an amorphous solid. mp 182°-184°. FDMS: m/e=356. α[D]589 =+57.25 (c=0.49, chloroform).

Workup

  1. customfitted with a reflux condenser
  2. temperaturethe stirred mixture was heated at 80°, under nitrogen, for 24 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 (5% methanol/ethyl acetate eluent)

Sources & evidence

ORD record
ord-cb318a1f7a814555b8f18a1498477971
Source dataset
uspto-grants-1997_09
Patent number
US05670514

Reaction notes

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