Pyridine → HCID 66758668, compound

HRID 242692Notes

Reaction equation

HRID 242692 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5](B(O)O)=[CH:4][CH:3]=1.[C:11]([O:15][C:16]([N:18]1[CH2:23][CH2:22][NH:21][CH:20]([CH2:24][C:25]([O:27][CH3:28])=[O:26])[CH2:19]1)=[O:17])([CH3:14])([CH3:13])[CH3:12].N1C=CC=CC=1>ClCCl.C([O-])(=O)C.[Cu+2].C([O-])(=O)C>[C:11]([O:15][C:16]([N:18]1[CH2:23][CH2:22][N:21]([C:5]2[CH:6]=[CH:7][C:2]([Cl:1])=[CH:3][CH:4]=2)[CH:20]([CH2:24][C:25]([O:27][CH3:28])=[O:26])[CH2:19]1)=[O:17])([CH3:14])([CH3:13])[CH3:12]

Participants

6

Reactant 3

HCID 1049PyridineHCID 742994-Chlorophenylboronic acidHCID 2756816Methyl 4-Boc-piperazine-2-acetate

Product 1

HCID 66758668HCID 66758668, compound

Reagents, catalysts & solvents 2

HCID 8895Cupric acetateCatalystHCID 6344DichloromethaneSolvent

Procedure

4-Chlorophenyl boronic acid (1.08 g, 6.97 mmol) and 3-methoxycarbonylmethyl-piperazine-1-carboxylic acid tert-butyl ester (0.9 g, 3.48 mmol) were dissolved in dichloromethane. To this mixture was added copper acetate (0.63 g, 3.48 mmol), 4 Å molecular sieves and pyridine (0.56 mL, 6.97 mmol) and the reaction mixture was stirred at room temperature for 72 h. The reaction mixture was concentrated in vacuo and dissolved in ethyl acetate, filtered through celite and concentrated. The crude product was purified using gradient elution from hexane/ethyl acetate (5%) to hexane/ethyl acetate (20%). ESI-MS m/z: 369 (M+1), UV retention time: 2.97 min.

Workup

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. dissolutiondissolved in ethyl acetate
  3. filtrationfiltered through celite
  4. concentrationconcentrated
  5. customThe crude product was purified
  6. washelution from hexane/ethyl acetate (5%) to hexane/ethyl acetate (20%)

Sources & evidence

ORD record
ord-d4d283a226bb42b296605dba4eee971d
Source dataset
uspto-grants-2014_02
Patent number
US08653096B2

Reaction notes

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