Sodium Carbonate → HCID 21473696, compound

HRID 1940570Notes

Reaction equation

HRID 1940570 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:17][CH2:16][C:15]2[C:10](=[CH:11][CH:12]=[C:13](OS(C(F)(F)F)(=O)=O)[CH:14]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[Cl:26][C:27]1[CH:32]=[CH:31][C:30](B(O)O)=[CH:29][CH:28]=1.C(=O)([O-])[O-].[Na+].[Na+]>C1(C)C=CC=CC=1.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:1]([O:5][C:6]([N:8]1[CH2:17][CH2:16][C:15]2[C:10](=[CH:11][CH:12]=[C:13]([C:30]3[CH:31]=[CH:32][C:27]([Cl:26])=[CH:28][CH:29]=3)[CH:14]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 742994-Chlorophenylboronic acidHCID 10091216Tert-butyl 6-(trifluoromethylsulfonyloxy)-3,4-dihydroisoquinoline-2(1H)-carboxylate

Product 1

HCID 21473696HCID 21473696, compoundYield 39%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 1140TolueneSolvent

Conditions

Temperature
90 °C

Procedure

To a mixture of 6-trifluoromethanesulfonyloxy-3,4-dihydro-1H-isoquinoline-2-carboxylic acid tert-butyl ester (2 g, 5.25 mmol) and 4-chlorophenyl boronic acid (1.17 g, 7.5 mmol)in toluene (20 ml) was added a 2M sodium carbonate solution (7.5 ml). The reaction mixture was stirred under a nitrogen atmosphere, then tetrakis(triphenylphosphine)palladium(0) (0.29 g, 0.25 mmol) was added and the reaction mixture was heated at 90° C. for 18 h. After allowing to cool the reaction mixture was diluted with water (100 ml) and extracted with ethyl acetate (3×100 ml). The ethyl acetate extracts were combined, dried over magnesium sulphate, filtered and evaporated under reduced pressure to give an oil. Purification by flash chromatography using hexane/ethyl acetate as eluant gave the title compound as an oil (0.7 g, 39%); δH (CDCl3) 1.5 (9H, s, C(CH3)3), 2.89 (2H, t, J 8.3 Hz, CH2), 3.68 (2H, t, J 8.3 Hz, CH2), 4.61 (2H, s, CH2), and 7.15-7.5 (7H, m, ArH).

Workup

  1. temperatureto cool the reaction mixture
  2. extractionextracted with ethyl acetate (3×100 ml)
  3. dry with materialdried over magnesium sulphate
  4. filtrationfiltered
  5. customevaporated under reduced pressure
  6. customto give an oil
  7. customPurification by flash chromatography

Sources & evidence

ORD record
ord-78caf4b90df54b17900dc6e10ec2b53d
Source dataset
uspto-grants-1997_12
Patent number
US05700809

Reaction notes

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