Sodium Carbonate → 1-((1S,3R)-3-(((tert-butyldimethylsilyl)oxy)methyl)-1-methyl-5-vinyl-3,4-dihydroisoquinolin-2(1H)-yl)-2-(2-chloro-6-fluorophenyl)ethan-1-one

HRID 1854573Notes

Reaction equation

HRID 1854573 reaction equation
Br[C:2]1[CH:11]=[CH:10][CH:9]=[C:8]2[C:3]=1[CH2:4][C@H:5]([CH2:24][O:25][Si:26]([C:29]([CH3:32])([CH3:31])[CH3:30])([CH3:28])[CH3:27])[N:6]([C:13](=[O:23])[CH2:14][C:15]1[C:20]([F:21])=[CH:19][CH:18]=[CH:17][C:16]=1[Cl:22])[C@H:7]2[CH3:12].[CH2:33](OB(C=C)OCCCC)[CH2:34]CC.C([O-])([O-])=O.[Na+].[Na+]>O1CCOCC1.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[Si:26]([O:25][CH2:24][C@H:5]1[CH2:4][C:3]2[C:8](=[CH:9][CH:10]=[CH:11][C:2]=2[CH:33]=[CH2:34])[C@H:7]([CH3:12])[N:6]1[C:13](=[O:23])[CH2:14][C:15]1[C:20]([F:21])=[CH:19][CH:18]=[CH:17][C:16]=1[Cl:22])([C:29]([CH3:30])([CH3:32])[CH3:31])([CH3:28])[CH3:27]

Participants

6

Reactant 3

HCID 10340Sodium CarbonateHCID 236543Dibutyl Vinylboronate (stabilized with Phenothiazine)HCID 1238139441-((1S,3R)-5-bromo-3-(((tert-butyldimethylsilyl)oxy)methyl)-1-methyl-3,4-dihydroisoquinolin-2(1H)-yl)-2-(2-chloro-6-fluorophenyl)ethan-1-one

Product 1

HCID 1235332471-((1S,3R)-3-(((tert-butyldimethylsilyl)oxy)methyl)-1-methyl-5-vinyl-3,4-dihydroisoquinolin-2(1H)-yl)-2-(2-chloro-6-fluorophenyl)ethan-1-oneYield 94.6%

Reagents, catalysts & solvents 2

HCID 178418476HCID 178418476, compoundCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
80 °C

Procedure

Dissolve 1-((1S,3R)-5-bromo-3-(((tert-butyldimethylsilyl)oxy)methyl)-1-methyl-3,4-dihydroisoquinolin-2(1H)-yl)-2-(2-chloro-6-fluorophenyl)ethan-1-one (1.8 g, 3.33 mmol) and vinylboronic acid dibutyl ester (1.5 mL, 6.65 mmol) in 1,4-dioxane (22 mL). Add aqueous Na2CO3 solution (11 mL, 2M in water). Degas with nitrogen 10 min Add bis(triphenylphosphine)palladium(II) chloride (467 mg, 0.67 mmol). Heat to 80° C. Stir 2 hours. Add water and extract with ethyl acetate three times. Combine the ethyl acetate extracts, dry over sodium sulfate, filter, and concentrate under reduced pressure to give a residue. Purify the residue by silica gel chromatography, eluting with ethyl acetate: hexanes (gradient, 5-40%) to give the title compound as a white foam (1.54 g, 3.15 mmol). MS (m/z): 488.2 (M+1).

Workup

  1. customDegas with nitrogen 10 min
  2. extractionAdd water and extract with ethyl acetate three times
  3. dry with materialdry over sodium sulfate
  4. filtrationfilter
  5. concentrationconcentrate under reduced pressure
  6. customto give a residue
  7. customPurify the residue by silica gel chromatography
  8. washeluting with ethyl acetate

Sources & evidence

ORD record
ord-37f2220a0295496f911e9c4ca1a80530
Source dataset
uspto-grants-2015_02
Patent number
US08962654B2

Reaction notes

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