Potassium Phosphate, Tribasic → (S)-3-(tert-Butoxycarbonylamino)-1-(4-cyclopropyl-5-isoquinolinesulfonyl)pyrrolidine

HRID 2425386Notes

Reaction equation

HRID 2425386 reaction equation
[C:1]([O:5][C:6]([NH:8][C@H:9]1[CH2:13][CH2:12][N:11]([S:14]([C:17]2[C:18]3[C:19](Br)=[CH:20][N:21]=[CH:22][C:23]=3[CH:24]=[CH:25][CH:26]=2)(=[O:16])=[O:15])[CH2:10]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH:28]1(B(O)O)[CH2:30][CH2:29]1.P([O-])([O-])([O-])=O.[K+].[K+].[K+].F[B-](F)(F)F.C1([PH+](C2CCCCC2)C2CCCCC2)CCCCC1>C1(C)C=CC=CC=1.C([O-])(=O)C.[Pd+2].C([O-])(=O)C.C(OCC)(=O)C>[C:1]([O:5][C:6]([NH:8][C@H:9]1[CH2:13][CH2:12][N:11]([S:14]([C:17]2[C:18]3[C:19]([CH:28]4[CH2:30][CH2:29]4)=[CH:20][N:21]=[CH:22][C:23]=3[CH:24]=[CH:25][CH:26]=2)(=[O:16])=[O:15])[CH2:10]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

8

Reactant 4

HCID 62657Potassium Phosphate, TribasicHCID 2760897Cyclopropylboronic acidHCID 11710396Tricyclohexylphosphonium TetrafluoroborateHCID 67242852(S)-3-(tert-Butoxycarbonylamino)-1-(4-bromo-5-isoquinolinesulfonyl)pyrrolidine

Product 1

HCID 67243196(S)-3-(tert-Butoxycarbonylamino)-1-(4-cyclopropyl-5-isoquinolinesulfonyl)pyrrolidineYield 29%

Reagents, catalysts & solvents 3

HCID 167845palladium(II) acetateCatalystHCID 1140TolueneSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
80 °C

Procedure

A suspension of Intermediate 1a (200 mg) obtained in Example 1-1, Step A, cyclopropylboronic acid (57 mg, Aldrich), anhydrous potassium phosphate (372 mg, Aldrich), and tricyclohexylphosphonium tetrafluoroborate (33 mg, Aldrich) in toluene (2 ml) was added with palladium acetate (10 mg, Wako Pure Chemical Industries), and the mixture was stirred at 80° C. with heating for 14 hours under a nitrogen gas atmosphere. The reaction mixture was cooled to room temperature, and then added with ethyl acetate (5 ml), and the insoluble solids were removed by filtration through Celite. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel chromatography (n-hexane:ethyl acetate=1:1) to obtain the title compound (53 mg).

Workup

  1. temperaturewith heating for 14 hours under a nitrogen gas atmosphere
  2. temperatureThe reaction mixture was cooled to room temperature
  3. customthe insoluble solids were removed by filtration through Celite
  4. customThe solvent was evaporated under reduced pressure
  5. customthe residue was purified by silica gel chromatography (n-hexane:ethyl acetate=1:1)

Sources & evidence

ORD record
ord-c8cb0c1b48bf41209535156c388488d5
Source dataset
uspto-grants-2011_06
Patent number
US07964613B2

Reaction notes

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