Sodium Carbonate → diethyl 5-(2,4-dichlorophenyl)-2-methyl-6b,9,10,10a-tetrahydro-1H-pyrido[3',4':4,5]pyrrolo[1,2,3-de]quinoxaline-3,8(2H,7H)-dicarboxylate

HRID 1789989Notes

Reaction equation

HRID 1789989 reaction equation
Br[C:2]1[CH:3]=[C:4]2[CH:19]3[CH2:20][N:21]([C:24]([O:26][CH2:27][CH3:28])=[O:25])[CH2:22][CH2:23][CH:18]3[N:6]3[CH2:7][CH:8]([CH3:17])[N:9]([C:12]([O:14][CH2:15][CH3:16])=[O:13])[C:10]([CH:11]=1)=[C:5]23.[Cl:29][C:30]1[CH:35]=[C:34]([Cl:36])[CH:33]=[CH:32][C:31]=1B(O)O.C([O-])([O-])=O.[Na+].[Na+]>CN(C=O)C.C(OCC)(=O)C.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Cl:29][C:30]1[CH:35]=[C:34]([Cl:36])[CH:33]=[CH:32][C:31]=1[C:2]1[CH:3]=[C:4]2[CH:19]3[CH2:20][N:21]([C:24]([O:26][CH2:27][CH3:28])=[O:25])[CH2:22][CH2:23][CH:18]3[N:6]3[CH2:7][CH:8]([CH3:17])[N:9]([C:12]([O:14][CH2:15][CH3:16])=[O:13])[C:10]([CH:11]=1)=[C:5]23

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 2734659(2,4-Dichlorophenyl)boronic acidHCID 22036791diethyl 5-bromo-2-methyl-6b,9,10,10a-tetrahydro-1H-pyrido[3',4':4,5]pyrrolo[1,2,3-de]quinoxaline-3,8(2H,7H)-dicarboxylate

Product 1

HCID 22036728diethyl 5-(2,4-dichlorophenyl)-2-methyl-6b,9,10,10a-tetrahydro-1H-pyrido[3',4':4,5]pyrrolo[1,2,3-de]quinoxaline-3,8(2H,7H)-dicarboxylateYield 29%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
100 °C

Procedure

To a solution of diethyl 5-bromo-2-methyl-6b,9,10,10a-tetrahydro-1H-pyrido[3′,4′:4,5]pyrrolo[1,2,3-de]quinoxaline-3,8(2H,7H)-dicarboxylate (100 mg, 0.22 mmol) in DMF (10 mL) was added 2,4-dichlorophenyl boronic acid (63 mg, 0.33 mmol) and Na2CO3 (58 mg, 0.55 mmo, in 0.4 mL of H2O). The mixture was degassed with a stream of nitrogen for 20 min and then there was added Pd(PPh3)4 (35 mg, 0.03 mmol) and the mixture was stirred at 100° C. for 16 h. The reaction was allowed to cool to ambient temperature and was diluted with ethyl acetate, washed with saturated aqueous sodium bicarbonate and brine, dried (MgSO4), filtered through Celite and concentrated in vacuo. The residue was purified by flash chromatography (elution with hexanes/ethyl acetate) to afford diethyl 5-(2,4-dichlorophenyl)-2-methyl-6b,9,10,10a-tetrahydro-1H-pyrido[3′,4′:4,5]pyrrolo[1,2,3-de]quinoxaline-3,8(2H,7H)-dicarboxylate (30 mg, 29% yield) MS [M+H]+ 517.

Workup

  1. customThe mixture was degassed with a stream of nitrogen for 20 min
  2. temperatureto cool to ambient temperature
  3. washwashed with saturated aqueous sodium bicarbonate and brine
  4. dry with materialdried (MgSO4)
  5. filtrationfiltered through Celite
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified by flash chromatography (elution with hexanes/ethyl acetate)

Sources & evidence

ORD record
ord-c991ff4f0ffe4caf906b891778ebccf7
Source dataset
uspto-grants-2006_07
Patent number
US07071186B2

Reaction notes

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