1,2-Dimethoxyethane → (r/s)-3-(Tert-butoxycarbonylamino)-1-[4-phenyl-5-isoquinolinesulfonyl]pyrrolidine

HRID 1436030Notes

Reaction equation

HRID 1436030 reaction equation
[C:1]([O:5][C:6]([NH:8][CH: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].[C:28]1(B(O)O)[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1.COCCOC.C(=O)([O-])[O-].[Na+].[Na+]>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.O>[C:1]([O:5][C:6]([NH:8][CH:9]1[CH2:13][CH2:12][N:11]([S:14]([C:17]2[C:18]3[C:19]([C:28]4[CH:33]=[CH:32][CH:31]=[CH:30][CH: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

7

Reactant 4

HCID 80711,2-DimethoxyethaneHCID 10340Sodium CarbonateHCID 66827Phenylboronic AcidHCID 67242856(r/s)-3-(Tert-butoxycarbonylamino)-1-(4-bromo-5-isoquinolinesulfonyl)pyrrolidine

Product 1

HCID 68587287(r/s)-3-(Tert-butoxycarbonylamino)-1-[4-phenyl-5-isoquinolinesulfonyl]pyrrolidineYield 69.7%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolvent

Procedure

Intermediate 1 (228 mg) obtained in Example 1, Step A is added with phenylboronic acid (122 mg, Aldrich), tetrakis(triphenylphosphine)palladium(0) (116 mg), 1,2-dimethoxyethane (5 ml) and 2 N aqueous sodium carbonate (2 ml), and the mixture is refluxed by heating for 5 hours under a nitrogen gas atmosphere. The reaction mixture is cooled to room temperature, then added with water (25 ml), and extracted 3 times with ethyl acetate (20 ml for each time), and the combined organic layer is washed with saturated brine (30 ml), and dried over anhydrous magnesium sulfate. The solvent is evaporated under reduced pressure, and the residue is purified by silica gel chromatography (n-hexane:ethyl acetate=2:1) to obtain the title compound (158 mg (predictive yield)).

Workup

  1. temperaturethe mixture is refluxed
  2. temperatureby heating for 5 hours under a nitrogen gas atmosphere
  3. extractionextracted 3 times with ethyl acetate (20 ml for each time), and the combined organic layer
  4. washis washed with saturated brine (30 ml)
  5. dry with materialdried over anhydrous magnesium sulfate
  6. customThe solvent is evaporated under reduced pressure
  7. customthe residue is purified by silica gel chromatography (n-hexane:ethyl acetate=2:1)

Sources & evidence

ORD record
ord-8500c50c94324066aebfccb1e913e58f
Source dataset
uspto-grants-2009_11
Patent number
US07618984B2

Reaction notes

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