Toluene → 2-(4-tert-butoxycarbonylbenzyl)-6-methyl-1-oxo-4-phenyl-1,2-dihydroisoquinoline-3-carboxylic Acid Methyl Ester

HRID 750176Notes

Reaction equation

HRID 750176 reaction equation
[CH3:1][O:2][C:3]([C:5]1[N:6]([CH2:23][C:24]2[CH:29]=[CH:28][C:27]([C:30]([O:32][C:33]([CH3:36])([CH3:35])[CH3:34])=[O:31])=[CH:26][CH:25]=2)[C:7](=[O:22])[C:8]2[C:13]([C:14]=1[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1)=[CH:12][C:11](Br)=[CH:10][CH:9]=2)=[O:4].[CH3:37]B(O)O.C(=O)([O-])[O-].[K+].[K+].C1(C)C=CC=CC=1>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.C1COCC1>[CH3:1][O:2][C:3]([C:5]1[N:6]([CH2:23][C:24]2[CH:29]=[CH:28][C:27]([C:30]([O:32][C:33]([CH3:36])([CH3:35])[CH3:34])=[O:31])=[CH:26][CH:25]=2)[C:7](=[O:22])[C:8]2[C:13]([C:14]=1[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1)=[CH:12][C:11]([CH3:37])=[CH:10][CH:9]=2)=[O:4]

Participants

8

Reactant 4

HCID 1140TolueneHCID 11430Potassium CarbonateHCID 139377Methylboronic AcidHCID 691566226-bromo-2-(4-tert-butoxycarbonylbenzyl)-1-oxo-4-phenyl-1,2-dihydroisoquinoline-3-carboxylic Acid Methyl Ester

Product 1

HCID 691566112-(4-tert-butoxycarbonylbenzyl)-6-methyl-1-oxo-4-phenyl-1,2-dihydroisoquinoline-3-carboxylic Acid Methyl EsterYield 86.2%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of 6-bromo-2-(4-tert-butoxycarbonylbenzyl)-1-oxo-4-phenyl-1,2-dihydroisoquinoline-3-carboxylic acid methyl ester (500 mg), methylboronic acid (270 mg), tetrakis(triphenylphosphine)palladium(0) (110 mg), potassium carbonate (380 mg), toluene (6 ml) and THF (4 ml) was stirred at 100° C. for 6 hrs. under a nitrogen atmosphere. Water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed with water and saturated brine. The solvent was dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (hexane-hexane:ethyl acetate=2:1) and recrystallized (ethyl acetate-hexane) to give the title compound (380 mg).

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe organic layer was washed with water and saturated brine
  3. dry with materialThe solvent was dried over anhydrous sodium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe obtained residue was purified by silica gel column chromatography (hexane-hexane:ethyl acetate=2:1)
  6. customrecrystallized (ethyl acetate-hexane)

Sources & evidence

ORD record
ord-103006a61ab64007942142f953f2aa32
Source dataset
uspto-grants-2008_07
Patent number
US07402595B2

Reaction notes

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