Sodium Carbonate → 5-(5-Ethoxycarbonylmethyl-2-methoxy-phenyl)-8-fluoro-3,4-dihydro-1H-isoquinoline-2-carboxylic acid benzyl ester

HRID 1773985Notes

Reaction equation

HRID 1773985 reaction equation
[CH2:1]([O:8][C:9]([N:11]1[CH2:20][CH2:19][C:18]2[C:13](=[C:14]([F:22])[CH:15]=[CH:16][C:17]=2Br)[CH2:12]1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH2:23]([O:25][C:26](=[O:45])[CH2:27][C:28]1[CH:33]=[CH:32][C:31]([O:34][CH3:35])=[C:30](B2OC(C)(C)C(C)(C)O2)[CH:29]=1)[CH3:24].C(=O)([O-])[O-].[Na+].[Na+]>C1(C)C=CC=CC=1.CO.O.[Pd].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>[CH2:1]([O:8][C:9]([N:11]1[CH2:20][CH2:19][C:18]2[C:13](=[C:14]([F:22])[CH:15]=[CH:16][C:17]=2[C:30]2[CH:29]=[C:28]([CH2:27][C:26]([O:25][CH2:23][CH3:24])=[O:45])[CH:33]=[CH:32][C:31]=2[O:34][CH3:35])[CH2:12]1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

6

Reactant 3

HCID 10340Sodium CarbonateHCID 58120060[4-Methoxy-3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-acetic acid ethyl esterHCID 89649301Benzyl 5-bromo-8-fluoro-1,2,3,4-tetrahydroisoquinoline-2-carboxylate

Product 1

HCID 1183531675-(5-Ethoxycarbonylmethyl-2-methoxy-phenyl)-8-fluoro-3,4-dihydro-1H-isoquinoline-2-carboxylic acid benzyl ester

Reagents, catalysts & solvents 2

HCID 11979704Tetrakis(triphenylphosphine)palladiumCatalystHCID 70394911MeOH toluene waterSolvent

Conditions

Temperature
100 °C

Procedure

To a mixture under N2 of 5-bromo-8-fluoro-3,4-dihydro-1H-isoquinoline-2-carboxylic acid benzyl ester (529 mg, 1.45 mmol, 1.00 eq.), [4-methoxy-3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-acetic acid ethyl ester (659 mg, 1.45 mmol, 1.00 eq.) and sodium carbonate (616 mg, 5.81 mmol, 4.00 eq.) in toluene/MeOH/water 20:4:1 (29 mL), tetrakis(triphenylphosphine) palladium (0) (84 mg, 0.07 mmol, 0.05 eq.) was added and the mixture was stirred at 100° C. for 18 hours. The mixture was allowed to cool to r.t. and concentrated in vacuo. The residue was partitioned between AcOEt (60 mL) and water (60 mL). The layers were separated. The org. phase was washed with sat. aq. NaCl soln. (1×60 mL), dried over MgSO4 and filtered through Celite. The filtrate was concentrated in vacuo. The residue was purified by flashmaster (column: 50 g, flow: 40 mL/min, 40 fractions of 40 mL, Heptane 100% to Heptane+30% AcOEt) to yield the title compound as a yellow oil.

Workup

  1. temperatureto cool to r.t.
  2. concentrationconcentrated in vacuo
  3. customThe residue was partitioned between AcOEt (60 mL) and water (60 mL)
  4. customThe layers were separated
  5. washphase was washed with sat. aq. NaCl soln
  6. dry with material(1×60 mL), dried over MgSO4
  7. filtrationfiltered through Celite
  8. concentrationThe filtrate was concentrated in vacuo
  9. customThe residue was purified by flashmaster (column: 50 g, flow: 40 mL/min, 40 fractions of 40 mL, Heptane 100% to Heptane+30% AcOEt)

Sources & evidence

ORD record
ord-6ba264f4f2a54488bc297843322edc52
Source dataset
uspto-grants-2016_02
Patent number
US09255090B2

Reaction notes

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