(3-Methoxyphenyl)boronic acid → ethyl 3-(2-(3-methoxyphenyl)-2,3-dihydro-1H-spiro[isoquinoline-4,4'-piperidine]-1'-yl)-8-azabicyclo[3.2.1]octane-8-carboxylate

HRID 251487Notes

Reaction equation

HRID 251487 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5](B(O)O)[CH:6]=[CH:7][CH:8]=1.Cl.[N:13]1([CH:28]2[CH2:34][CH:33]3[N:35]([C:36]([O:38][CH2:39][CH3:40])=[O:37])[CH:30]([CH2:31][CH2:32]3)[CH2:29]2)[CH2:18][CH2:17][C:16]2([C:27]3[C:22](=[CH:23][CH:24]=[CH:25][CH:26]=3)[CH2:21][NH:20][CH2:19]2)[CH2:15][CH2:14]1>C(Cl)Cl.CO>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([N:20]2[CH2:19][C:16]3([CH2:17][CH2:18][N:13]([CH:28]4[CH2:29][CH:30]5[N:35]([C:36]([O:38][CH2:39][CH3:40])=[O:37])[CH:33]([CH2:32][CH2:31]5)[CH2:34]4)[CH2:14][CH2:15]3)[C:27]3[C:22](=[CH:23][CH:24]=[CH:25][CH:26]=3)[CH2:21]2)[CH:6]=[CH:7][CH:8]=1

Participants

5

Reactant 2

HCID 2734370(3-Methoxyphenyl)boronic acidHCID 86609340Ethyl 3-(2,3-dihydro-1H-spiro[isoquinoline-4,4'-piperidine]-1'-yl)-8-azabicyclo[3.2.1]octane-8-carboxylate hydrochloride

Product 1

HCID 58089606ethyl 3-(2-(3-methoxyphenyl)-2,3-dihydro-1H-spiro[isoquinoline-4,4'-piperidine]-1'-yl)-8-azabicyclo[3.2.1]octane-8-carboxylate

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 6344DichloromethaneSolvent

Procedure

A suspension of 3-methoxyphenylboronic acid (30 mg, 0.2 mmol), Cu(OAc)2H2O (2 mg, 5 mol %), 3 Å molecular sieves (75 mg) in 1 mL of CH2Cl2 were stirred at room temperature for 5 min. Ethyl 3-(2,3-dihydro-1H-spiro[isoquinoline-4,4′-piperidine]-1′-yl)-8-azabicyclo[3.2.1]octane-8-carboxylate hydrochloride 5c (42 mg, 0.1 mmol) was added to the reaction and mixture was stirred at room temperature for 24 h. The reaction was diluted with methanol, filtered and subjected to reverse-phase HPLC purification (2-50% CH3CN—H2O gradient, with 0.05% TFA, 15 min) to give pure ethyl 3-(2-(3-methoxyphenyl)-2,3-dihydro -1H-spiro[isoquinoline-4,4′-piperidine]-1′-yl)-8-azabicyclo[3.2.1]octane-8-carboxylate. LC-MS: m/z [M+H]+ 490.0, retention time 2.61 min (10-90% CH3CN—H2O gradient, with 0.05% TFA, 5 min).

Workup

  1. stirringwas stirred at room temperature for 24 h
  2. filtrationfiltered
  3. customsubjected to reverse-phase HPLC purification (2-50% CH3CN—H2O gradient, with 0.05% TFA, 15 min)

Sources & evidence

ORD record
ord-a739371959384828a889782a7d27947f
Source dataset
uspto-grants-2011_01
Patent number
US07863449B2

Reaction notes

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