Potassium Carbonate → Ethyl 3-{[5-(biphenyl-4-yl)-1-(biphenyl-4-ylmethyl)-4,6-difluoro-1H-benzimidazol-2-yl]oxy}cyclopentanecarboxylate

HRID 340791Notes

Reaction equation

HRID 340791 reaction equation
[C:1]1([C:31]2[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=2)[CH:6]=[CH:5][C:4]([CH2:7][N:8]2[C:12]3[CH:13]=[C:14]([F:19])[C:15](I)=[C:16]([F:17])[C:11]=3[N:10]=[C:9]2[O:20][CH:21]2[CH2:25][CH2:24][CH:23]([C:26]([O:28][CH2:29][CH3:30])=[O:27])[CH2:22]2)=[CH:3][CH:2]=1.B(O)(O)[C:38]1[CH:39]=[CH:40][C:41]([C:44]2[CH:45]=[CH:46][CH:47]=[CH:48][CH:49]=2)=[CH:42][CH:43]=1.C([O-])([O-])=O.[K+].[K+]>CN(C=O)C.CCOC(C)=O.O.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>[C:41]1([C:44]2[CH:49]=[CH:48][CH:47]=[CH:46][CH:45]=2)[CH:42]=[CH:43][C:38]([C:15]2[C:14]([F:19])=[CH:13][C:12]3[N:8]([CH2:7][C:4]4[CH:5]=[CH:6][C:1]([C:31]5[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=5)=[CH:2][CH:3]=4)[C:9]([O:20][CH:21]4[CH2:25][CH2:24][CH:23]([C:26]([O:28][CH2:29][CH3:30])=[O:27])[CH2:22]4)=[N:10][C:11]=3[C:16]=2[F:17])=[CH:39][CH:40]=1

Participants

8

Reactant 3

HCID 11430Potassium CarbonateHCID 1512531,1'-Biphenyl-4-yl-boronic acidHCID 67408440Ethyl 3-{[1-(biphenyl-4-ylmethyl)-4,6-difluoro-5-iodo-1H-benzimidazol-2-yl]oxy}cyclopentanecarboxylate

Product 1

HCID 67407206Ethyl 3-{[5-(biphenyl-4-yl)-1-(biphenyl-4-ylmethyl)-4,6-difluoro-1H-benzimidazol-2-yl]oxy}cyclopentanecarboxylate

Reagents, catalysts & solvents 4

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
120 °C

Procedure

A solution of ethyl 3-{[1-(biphenyl-4-ylmethyl)-4,6-difluoro-5-iodo-1H-benzimidazol-2-yl]oxy}cyclopentanecarboxylate (0.290 g, 0.481 mmol), biphenylboronic acid (0.105 g, 0.530 mmol), and Pd(PPh3)4 (22 mg, 0.019 mmol) in 4.8 mL of DMF was treated with a 1 M solution of K2CO3 (0.960 mL). The resulting yellow solution was heated at 120° C. for 45 min, and then diluted with EtOAc and H2O. The layers were separated and the aqueous layer was extracted with EtOAc. The combined organic layers were washed with brine, dried over Na2SO4, filtered, and concentrated. Purification of the resulting residue by flash chromatography (0-25% EtOac/hexanes) afforded the desired compound as a white solid. LCMS: calculated for C40H34F2N2O3 628.71, observed m/e 629.1 (M+H)+ (Rt 2.82/4 min).

Workup

  1. customThe layers were separated
  2. extractionthe aqueous layer was extracted with EtOAc
  3. washThe combined organic layers were washed with brine
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customPurification of the resulting residue by flash chromatography (0-25% EtOac/hexanes)

Sources & evidence

ORD record
ord-3886c12536cc447783876bd4beb28eff
Source dataset
uspto-grants-2014_11
Patent number
US08895596B2

Reaction notes

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