Acetyl chloride → 1-[5-Aminomethyl-1-(4-hydroxy-butyl)-1H-benzoimidazol-2-ylmethyl]-4-methoxy-1H-quinolin-2-one

HRID 896365Notes

Reaction equation

HRID 896365 reaction equation
C(OC(=O)[NH:7][CH2:8][C:9]1[CH:36]=[CH:35][C:12]2[N:13]([CH2:30][CH2:31][CH2:32][CH2:33][OH:34])[C:14]([CH2:16][N:17]3[C:26]4[C:21](=[CH:22][CH:23]=[CH:24][CH:25]=4)[C:20]([O:27][CH3:28])=[CH:19][C:18]3=[O:29])=[N:15][C:11]=2[CH:10]=1)(C)(C)C.C(O)(C(F)(F)F)=O.C(Cl)(=O)C>C(Cl)Cl>[NH2:7][CH2:8][C:9]1[CH:36]=[CH:35][C:12]2[N:13]([CH2:30][CH2:31][CH2:32][CH2:33][OH:34])[C:14]([CH2:16][N:17]3[C:26]4[C:21](=[CH:22][CH:23]=[CH:24][CH:25]=4)[C:20]([O:27][CH3:28])=[CH:19][C:18]3=[O:29])=[N:15][C:11]=2[CH:10]=1

Participants

5

Reactant 3

HCID 6367Acetyl chlorideHCID 6422Trifluoroacetic acidHCID 69717811[1-(4-hydroxy-butyl)-2-(4-methoxy-2-oxo-2H-quinolin-1-ylmethyl)-1H-benzoimidazol-5-ylmethyl]-carbamic acid tert-butyl ester

Product 1

HCID 444336091-[5-Aminomethyl-1-(4-hydroxy-butyl)-1H-benzoimidazol-2-ylmethyl]-4-methoxy-1H-quinolin-2-one

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a cooled (0° C.) suspension of [1-(4-hydroxy-butyl)-2-(4-methoxy-2-oxo-2H-quinolin-1-ylmethyl)-1H-benzoimidazol-5-ylmethyl]-carbamic acid tert-butyl ester (74 mg, 0.15 mmol) in DCM (3 mL) was added TFA (337 μL, 4.38 mmol). The solution was allowed to stir for 6 h at room temperature, followed by the removal of the volatiles in vacuo. The resulting trifluoroacetate was dissolved in methanol (3 mL) followed by the addition of acetyl cloride (104 μL, 1.46 mmol). After 10 minutes the solution was concentrated. This procedure was repeated allowing the reaction to run for 3 hrs. The solution was concentrated in vacuo and the residue stripped with methanol (twice) to yield 1-[5-Aminomethyl-1-(4-hydroxy-butyl)-1H-benzoimidazol-2-ylmethyl]-4-methoxy-1H-quinolin-2-one; HCl salt (65 mg, 100%) as an off white solid:

Workup

  1. temperatureTo a cooled
  2. customfollowed by the removal of the volatiles in vacuo
  3. dissolutionThe resulting trifluoroacetate was dissolved in methanol (3 mL)
  4. concentrationAfter 10 minutes the solution was concentrated
  5. customthe reaction
  6. waitto run for 3 hrs
  7. concentrationThe solution was concentrated in vacuo

Sources & evidence

ORD record
ord-b774b5335ab445268cc923d824988137
Source dataset
uspto-grants-2005_07
Patent number
US06919331B2

Reaction notes

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