Ethyl Acetate → HCID 67980521, compound

HRID 1622305Notes

Reaction equation

HRID 1622305 reaction equation
Cl.[CH2:2]1[C:11]2[C:6](=[CH:7][C:8]([C:12]([O:14][CH3:15])=[O:13])=[CH:9][CH:10]=2)[CH2:5][CH2:4][NH:3]1.[Br:16][C:17]1[CH:24]=[CH:23][C:20]([CH2:21]Br)=[CH:19][CH:18]=1.C([O-])([O-])=O.[K+].[K+].CCOC(C)=O>CN(C=O)C.O>[Br:16][C:17]1[CH:24]=[CH:23][C:20]([CH2:21][N:3]2[CH2:4][CH2:5][C:6]3[C:11](=[CH:10][CH:9]=[C:8]([C:12]([O:14][CH3:15])=[O:13])[CH:7]=3)[CH2:2]2)=[CH:19][CH:18]=1

Participants

7

Reactant 4

HCID 8857Ethyl AcetateHCID 11430Potassium CarbonateHCID 685274-Bromobenzyl bromideHCID 42614607Methyl 1,2,3,4-tetrahydroisoquinoline-6-carboxylate hydrochloride

Product 1

HCID 67980521HCID 67980521, compoundYield 104.5%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

To a solution of methyl 1,2,3,4-tetrahydroisoquinoline-6-carboxylate hydrochloride (500.0 mg, 2.00 mmol) in DMF (17.0 mL) was added 4-bromobenzylbromide (604 mg, 2.42 mmol) and K2CO3 (910 mg, 6.59 mmol). The resulting mixture was stirred overnight at rt. EtOAc and water were added, and the phases were separated. The organic phase was dried over Na2SO4, filtered and concentrated. The resulting residue was purified by column chromatography (SiO2, 0-40% EtOAc in hexane) to give methyl 2-(4-bromobenzyl)-1,2,3,4-tetrahydroisoquinoline-6-carboxylate (753 mg, 100%). LC-MS: (FA) ES+ 361; 1H NMR (300 MHz, CDCl3) δ 7.86-7.70 (m, 2H), 7.46 (dd, J=8.7, 2.1 Hz, 2H), 7.36-7.21 (m, 2H), 7.04 (d, J=8.0 Hz, 1H), 3.89 (d, J=3.8 Hz, 3H), 3.64 (s, 4H), 2.93 (t, J=5.8 Hz, 2H), 2.83-2.64 (m, 2H).

Workup

  1. customthe phases were separated
  2. dry with materialThe organic phase was dried over Na2SO4
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customThe resulting residue was purified by column chromatography (SiO2, 0-40% EtOAc in hexane)

Sources & evidence

ORD record
ord-15956912804947f5a3d512b5a398d003
Source dataset
uspto-grants-2014_07
Patent number
US08778931B2

Reaction notes

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