Hydrochloric Acid → Biphenyl-2-ylcarbamic Acid 1-(9-Oxononyl)piperidin-4-yl Ester

HRID 1786798Notes

Reaction equation

HRID 1786798 reaction equation
C[O:2][CH:3](OC)[CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][N:12]1[CH2:17][CH2:16][CH:15]([O:18][C:19](=[O:33])[NH:20][C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][C:22]=2[C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=2)[CH2:14][CH2:13]1.C(#N)C.Cl>ClCCl>[O:2]=[CH:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][N:12]1[CH2:17][CH2:16][CH:15]([O:18][C:19](=[O:33])[NH:20][C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][C:22]=2[C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=2)[CH2:14][CH2:13]1

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 6342AcetonitrileHCID 66936510Biphenyl-2-ylcarbamic acid 1-(9,9-dimethoxynonyl)piperidin-4-yl ester

Product 1

HCID 85988898Biphenyl-2-ylcarbamic Acid 1-(9-Oxononyl)piperidin-4-yl EsterYield 98%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a 500 mL round-bottomed flask with a magnetic stirrer was added biphenyl-2-ylcarbamic acid 1-(9,9-dimethoxynonyl)piperidin-4-yl ester (7.7 g, 15.9 mmol) and then acetonitrile (70 mL) and aqueous 1M hydrochloric acid (70 mL). The resulting mixture was stirred at room temperature for 1 h and then dichloromethane (200 mL) was added. This mixture was stirred for 15 min. and then the layers were separated. The organic layer was dried (MgSO4), filtered and concentrated under reduced pressure to afford the title intermediate (6.8 g), which was used in the next step without further purification.

Workup

  1. stirringThis mixture was stirred for 15 min.
  2. customthe layers were separated
  3. dry with materialThe organic layer was dried (MgSO4)
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-4336536ced4e4d51aa02d37363a52c83
Source dataset
uspto-grants-2009_03
Patent number
US07507751B2

Reaction notes

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