Lithium Hydroxide → HCID 178440227, compound

HRID 1620239Notes

Reaction equation

HRID 1620239 reaction equation
Cl.Cl[CH2:3][C:4]1[C:5]([NH:16][CH2:17][CH2:18][NH:19][C:20](=[O:22])[CH3:21])=[N:6][C:7]2[C:12]([CH:13]=1)=[CH:11][C:10]([O:14][CH3:15])=[CH:9][CH:8]=2.[CH3:23][O:24][C:25]1[CH:26]=[C:27]2[C:32](=[CH:33][C:34]=1[O:35][CH3:36])[C:31]([CH2:37][CH2:38][CH3:39])=[N:30][C:29]([OH:40])=[CH:28]2.[Li+].[OH-]>C1COCC1.C(Cl)Cl>[OH:40][C:29]1[N:30]=[C:31]([CH2:37][CH2:38][CH3:39])[C:32]2[C:27]([C:28]=1[CH2:3][C:4]1[C:5]([NH:16][CH2:17][CH2:18][NH:19][C:20](=[O:22])[CH3:21])=[N:6][C:7]3[C:12]([CH:13]=1)=[CH:11][C:10]([O:14][CH3:15])=[CH:9][CH:8]=3)=[CH:26][C:25]([O:24][CH3:23])=[C:34]([O:35][CH3:36])[CH:33]=2

Participants

6

Reactant 3

HCID 3939Lithium HydroxideHCID 68182138HCID 68182138, compound2×HCID 178440211HCID 178440211, compound

Product 1

HCID 178440227HCID 178440227, compound

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
150 °C

Procedure

To a stirred solution of N-(2-((3-(chloromethyl)-6-methoxyquinolin-2-yl)amino)ethyl)acetamide hydrochloride SLA 41090 (128 mg, 0.372 mmol) in THF (10 mL) in a 20 mL microwave vial equipped with a magnetic stirrer was added 6,7-dimethoxy-1-propylisoquinolin-3-ol RBO 35134 (103 mg, 0.417 mmol) followed by a 2 N aq. LiOH solution (0.21 mL, 0.42 mmol) and the mixture was stirred at 150° C. for 1.5 h under microwave irradiation. After cooling to RT, the mixture was diluted with CH2Cl2:MeOH=9:1 (150 mL) and washed with brine (20 mL), dried over Na2SO4, filtered and concentrated at 40° C. under vacuum. Purification by column chromatography (SiO2, eluent CH2Cl2:MeOH=100:0 to 92:8) provided 19.4 mg of N-(2-(3-((3-hydroxy-6,7-dimethoxy-1-propylisoquinolin-4-yl)methyl)-6-methoxyquinolin-2-ylamino)ethyl)acetamide. This free base was dissolved in CH2Cl2 (2 mL) in a 10 mL round-bottomed flask equipped with a magnetic stirrer before addition of a 0.49 M HCl solution in MeOH (1.0 mL). The reaction mixture was stirred for 5 min at RT then concentrated at 40° C. under vacuum to afforded N-(2-((3-((3-hydroxy-6,7-dimethoxy-1-propylisoquinolin-4-yl)methyl)-6-methoxyquinolin-2-yl)amino)ethyl)acetamide dihydrochloride 55 as a yellow solid (20 mg, 9% yield).

Workup

  1. temperatureAfter cooling to RT
  2. washMeOH=9:1 (150 mL) and washed with brine (20 mL)
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated at 40° C. under vacuum
  6. customPurification by column chromatography (SiO2, eluent CH2Cl2:MeOH=100:0 to 92:8)

Sources & evidence

ORD record
ord-f05bf0dc98e74b8d841437a94f242f6a
Source dataset
uspto-grants-2014_07
Patent number
US08772316B2

Reaction notes

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