Potassium Phosphate, Tribasic → HCID 178502475, compound

HRID 1751616Notes

Reaction equation

HRID 1751616 reaction equation
Br[C:2]1[CH:3]=[C:4]2[C:30](=[CH:31][CH:32]=1)[C:8]1[NH:9][C:10]([C@@H:12]3[C@H:17]4[CH2:18][C@H:14]([CH2:15][CH2:16]4)[N:13]3[C:19](=[O:29])[C@@H:20]([NH:24][C:25](=[O:28])[O:26][CH3:27])[CH:21]([CH3:23])[CH3:22])=[N:11][C:7]=1[CH:6]=[CH:5]2.CC1(C)C(C)(C)OB([C:41]2[CH:42]=[C:43]3[C:63](=[CH:64][CH:65]=2)[C:47]2[NH:48][C:49]([C@@H:51]4[CH2:55][CH2:54][CH2:53][N:52]4[C:56]([O:58][C:59]([CH3:62])([CH3:61])[CH3:60])=[O:57])=[N:50][C:46]=2[CH:45]=[CH:44]3)O1.P([O-])([O-])([O-])=O.[K+].[K+].[K+]>COCCOC.C(OCC)(=O)C>[CH3:27][O:26][C:25]([NH:24][C@@H:20]([CH:21]([CH3:23])[CH3:22])[C:19]([N:13]1[C@H:12]([C:10]2[NH:9][C:8]3[C:30]4[C:4]([CH:5]=[CH:6][C:7]=3[N:11]=2)=[CH:3][C:2]([C:41]2[CH:42]=[C:43]3[C:63](=[CH:64][CH:65]=2)[C:47]2[NH:48][C:49]([C@@H:51]5[CH2:55][CH2:54][CH2:53][N:52]5[C:56]([O:58][C:59]([CH3:61])([CH3:62])[CH3:60])=[O:57])=[N:50][C:46]=2[CH:45]=[CH:44]3)=[CH:32][CH:31]=4)[C@H:17]2[CH2:18][C@@H:14]1[CH2:15][CH2:16]2)=[O:29])=[O:28]

Participants

6

Reactant 3

HCID 62657Potassium Phosphate, TribasicHCID 178451892HCID 178451892, compoundHCID 178502473HCID 178502473, compound

Product 1

HCID 178502475HCID 178502475, compoundYield 67.1%

Reagents, catalysts & solvents 2

HCID 80711,2-DimethoxyethaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

Methyl (S)-1-((1S,3S,4R)-3-(7-bromo-1H-naphtho[1,2-d]imidazol-2-yl)-2-azabicyclo[2.2.1]heptan-2-yl)-3-methyl-1-oxobutan-2-ylcarbamate (0.300 g, 0.601 mmol), (S)-tert-butyl 2-(7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-naphtho[1,2-d]imidazol-2-yl)pyrrolidine-1-carboxylate (0.334 g, 0.721 mmol), and aqueous potassium phosphate (2M, 0.901 mL, 1.802 mmol) were suspended in 1,2-dimethoxyethane (3.00 mL) and sparged with argon gas for 30 minutes. Palladium tetrakis triphenylphosphine (0.069 g, 0.060 mmol) was added and the reaction mixture was capped and placed in a preheated 80° C. oil bath. The solution was heated for 18 hours and subsequently stirred at room temperature for two days. Upon completion, the reaction was diluted with ethyl acetate and washed with brine. The concentrated organic layer was purified by normal phase chromatography (40-100% ethyl acetate (10% MeOH) in hexanes) to give (S)-tert-butyl 2-(2′-((1S,3S,4R)-2-((S)-2-(methoxycarbonylamino)-3-methylbutanoyl)-2-azabicyclo[2.2.1]heptan-3-yl)-1H,1′H-7,7′-binaphtho[1,2-d]imidazol-2-yl)pyrrolidine-1-carboxylate (0.305 g, 67%). LCMS-ESI+: calc'd for C44H49N7O5: 755.38 (M+); Found: 756.8 (M+H+).

Workup

  1. customsparged with argon gas for 30 minutes
  2. customthe reaction mixture was capped
  3. customplaced in a preheated 80° C.
  4. temperatureThe solution was heated for 18 hours
  5. washwashed with brine
  6. customThe concentrated organic layer was purified by normal phase chromatography (40-100% ethyl acetate (10% MeOH) in hexanes)

Sources & evidence

ORD record
ord-780bd4befaa6449d91d4c469039767e5
Source dataset
uspto-grants-2015_10
Patent number
US09156823B2

Reaction notes

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