Potassium Carbonate → HCID 178461455, compound

HRID 1412948Notes

Reaction equation

HRID 1412948 reaction equation
[CH3:1][C@@H:2]1[CH2:6][N:5](C(OC(C)(C)C)=O)[C@H:4]([C:14]2[NH:18][C:17]3[C:19]4[C:24]([CH:25]=[CH:26][C:16]=3[N:15]=2)=[CH:23][C:22]2[C:27]3[C:32]([CH2:33][O:34][C:21]=2[CH:20]=4)=[CH:31][C:30](B2OC(C)(C)C(C)(C)O2)=[CH:29][CH:28]=3)[CH2:3]1.I[C:45]1[NH:49][C:48]([C@@H:50]2[CH2:54][C@H:53]([CH3:55])[CH2:52][N:51]2[C:56]([O:58][C:59]([CH3:62])([CH3:61])[CH3:60])=[O:57])=[N:47][CH:46]=1.[C:63]([O-:66])([O-:65])=O.[K+].[K+]>COCCOC.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.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[C:2]([O:65][C:63]([N:5]1[CH2:6][C@@H:2]([CH3:1])[CH2:3][C@H:4]1[C:14]1[NH:18][C:17]2[C:19]3[C:24]([CH:25]=[CH:26][C:16]=2[N:15]=1)=[CH:23][C:22]1[C:27]2[C:32]([CH2:33][O:34][C:21]=1[CH:20]=3)=[CH:31][C:30]([C:45]1[NH:49][C:48]([C@@H:50]3[CH2:54][C@H:53]([CH3:55])[CH2:52][N:51]3[C:56]([O:58][C:59]([CH3:62])([CH3:61])[CH3:60])=[O:57])=[N:47][CH:46]=1)=[CH:29][CH:28]=2)=[O:66])([CH3:6])([CH3:3])[CH3:1]

Participants

7

Reactant 3

HCID 11430Potassium CarbonateHCID 53261949(2S,4S)-tert-butyl 2-(5-iodo-1H-imidazol-2-yl)-4-methylpyrrolidine-1-carboxylateHCID 178461438HCID 178461438, compound

Product 1

HCID 178461455HCID 178461455, compoundYield 66.6%

Reagents, catalysts & solvents 3

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 178418397HCID 178418397, compoundCatalystHCID 80711,2-DimethoxyethaneSolvent

Conditions

Temperature
85 °C

Procedure

(2S,4S)-tert-butyl 4-methyl-2-(9-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,11-dihydroisochromeno[4′,3′:6,7]naphtho[1,2-d]imidazol-2-yl)pyrrolidine-1-carboxylate (293 mg, 0.78 mmol), (2S,4S)-tert-butyl 2-(5-iodo-1H-imidazol-2-yl)-4-methylpyrrolidine-1-carboxylate (300 mg, 0.52 mmol), Pd(PPh3)4 (60 mg, 0.052 mmol), PdCl2(dppf)2 (38 mg, 0.052 mmol), and K2CO3 (2M in H2O, 0.86 mL, 1.72 mmol) were combined in DME (6 mL). The mixture was degassed with bubbling N2 for 10 min then heated to 85° C. for 16 h. After cooling, the reaction mixture was diluted with EtOAc, and washed successively with saturated aqueous NaHCO3 and brine. The organics were dried over MgSO4, filtered and concentrated under reduced pressure. The crude residue was purified by silica column chromatography (100% EtOAc) to afford tert-butyl(2S,4S)-2-(5-{2-[(2S,4S)-1-(tert-butoxycarbonyl)-4-methylpyrrolidin-2-yl]-1,11-dihydroisochromeno[4′,3′:6,7]naphtho[1,2-d]imidazol-9-yl}-1H-imidazol-2-yl)-4-methylpyrrolidine-1-carboxylate (183 mg, 50%).

Workup

  1. customThe mixture was degassed with bubbling N2 for 10 min
  2. temperatureAfter cooling
  3. additionthe reaction mixture was diluted with EtOAc
  4. washwashed successively with saturated aqueous NaHCO3 and brine
  5. dry with materialThe organics were dried over MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure
  8. customThe crude residue was purified by silica column chromatography (100% EtOAc)

Sources & evidence

ORD record
ord-5d8651c9f7964975b9845b891360ca7a
Source dataset
uspto-grants-2014_12
Patent number
US08921341B2

Reaction notes

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