Hydrochloric Acid → HCID 57407163, compound

HRID 1507377Notes

Reaction equation

HRID 1507377 reaction equation
[OH:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[N:8]=[C:7]([N:12]1[CH2:17][CH2:16][CH:15]([C:18]([O:20]C)=[O:19])[CH2:14][CH2:13]1)[N:6]=[CH:5]2.[OH-].[Na+].Cl>CO.CCOC(C)=O>[OH:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[N:8]=[C:7]([N:12]1[CH2:13][CH2:14][CH:15]([C:18]([OH:20])=[O:19])[CH2:16][CH2:17]1)[N:6]=[CH:5]2

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 67974367HCID 67974367, compound

Product 1

HCID 57407163HCID 57407163, compoundYield 19%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
25 °C

Procedure

To a solution of methyl 1-(6-hydroxyquinazolin-2-yl)piperidine-4-carboxylate (330 mg, crude from above) in MeOH (10 mL) was added aqueous NaOH (10 mL, 2M). The mixture was stirred at 25° C. for 16 hours. The reaction mixture was acidified with 1N HCl to pH=1˜2, then concentrated to give a residue, which was diluted with EtOAc (100 mL), filtered and concentrated to give the crude product which was purified by prep-HPLC (0.1% TFA as additive). Most of the solvent was removed in vacuo followed by lyophilization to give the product (70 mg, 2-step yield: 19%) as a solid. 1H NMR (DMSO-d6 400 MHz): δ 9.15 (s, 1H), 7.51 (d, J=9.2 Hz, 1H), 7.37 (dd, J=9.2, 2.8 Hz, 1H), 7.13 (d, J=2.8 Hz, 1H), 4.59 (d, J=13.2 Hz, 2H), 3.16 (t, J=11.4 Hz, 2H), 2.68-2.52 (m, 1H), 1.93 (dd, J=13.2, 3.2 Hz, 2H), 1.62-1.48 (m, 2H). MS (ESI): m/z 274.1 [M+H]+.

Workup

  1. concentrationconcentrated
  2. customto give a residue, which
  3. filtrationfiltered
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-077185aca7274479b60e4f5144919798
Source dataset
uspto-grants-2015_12
Patent number
US09221810B2

Reaction notes

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