Hydrochloric Acid → Ethyl 3-(5-amino-2-(4-hydroxy-2-methylphenethyl)benzo[f][1,7]naphthyridin-8-yl)propanoate

HRID 631176Notes

Reaction equation

HRID 631176 reaction equation
[NH2:1][C:2]1[C:11]2[N:10]=[CH:9][C:8]([CH2:12][CH2:13][C:14]3[CH:19]=[CH:18][C:17]([O:20]COC)=[CH:16][C:15]=3[CH3:24])=[CH:7][C:6]=2[C:5]2[CH:25]=[CH:26][C:27]([CH2:29][CH2:30][C:31]([O:33][CH2:34][CH3:35])=[O:32])=[CH:28][C:4]=2[N:3]=1.Cl>CCO.O1CCOCC1>[NH2:1][C:2]1[C:11]2[N:10]=[CH:9][C:8]([CH2:12][CH2:13][C:14]3[CH:19]=[CH:18][C:17]([OH:20])=[CH:16][C:15]=3[CH3:24])=[CH:7][C:6]=2[C:5]2[CH:25]=[CH:26][C:27]([CH2:29][CH2:30][C:31]([O:33][CH2:34][CH3:35])=[O:32])=[CH:28][C:4]=2[N:3]=1

Participants

5

Reactant 2

HCID 313Hydrochloric AcidHCID 67065519Ethyl 3-(5-amino-2-(4-(methoxymethoxy)-2-methylphenethyl)benzo[f][1,7]naphthyridin-8-yl)propanoate

Product 1

HCID 67065545Ethyl 3-(5-amino-2-(4-hydroxy-2-methylphenethyl)benzo[f][1,7]naphthyridin-8-yl)propanoate

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 312751,4-DioxaneSolvent

Procedure

Ethyl 3-(5-amino-2-(4-(methoxymethoxy)-2-methylphenethyl)benzo[f][1,7]naphthyridin-8-yl)propanoate (12) (1.0 equiv.) was dissolved in EtOH (0.2M), then added a solution of 4M HCl in dioxane (0.2M). The product precipitated out as a yellow salt. After stirring for 3 hours, the reaction was poured into a stirring solution of ether. The mixture was stirred for 10 minutes, then filtered and washed with ether. Ethyl 3-(5-amino-2-(4-hydroxy-2-methylphenethyl)benzo[f][1,7]naphthyridin-8-yl)propanoate (13) was obtained as a yellow solid which was dried on vacuum overnight (bis-HCl salt). Alternatively, the crude product was purified by Combiflash using 0-5% MeOH in DCM to give the free base.

Workup

  1. customThe product precipitated out as a yellow salt
  2. additionthe reaction was poured into a stirring solution of ether
  3. stirringThe mixture was stirred for 10 minutes
  4. filtrationfiltered
  5. washwashed with ether

Sources & evidence

ORD record
ord-eb98cedcefec48f4b910d0f1217014bb
Source dataset
uspto-grants-2016_04
Patent number
US09320748B2

Reaction notes

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