Acetic Acid → HCID 23141795, compound

HRID 32227Notes

Reaction equation

HRID 32227 reaction equation
[CH3:1][C:2]1([CH3:22])[CH2:7][C:6]([CH3:9])([CH3:8])[CH2:5][CH:4]([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][C:11]=2[N:16]2[CH2:21][CH2:20][NH:19][CH2:18][CH2:17]2)[CH2:3]1.[C:23]1(=O)[CH2:26][CH2:25][CH2:24]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(O)(=O)C.C(=O)([O-])O.[Na+]>O1CCCC1.C(OCC)(=O)C>[CH:23]1([N:19]2[CH2:18][CH2:17][N:16]([C:11]3[CH:12]=[CH:13][CH:14]=[CH:15][C:10]=3[CH:4]3[CH2:3][C:2]([CH3:22])([CH3:1])[CH2:7][C:6]([CH3:8])([CH3:9])[CH2:5]3)[CH2:21][CH2:20]2)[CH2:26][CH2:25][CH2:24]1

Participants

8

Reactant 5

HCID 176Acetic AcidHCID 14496CyclobutanoneHCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 119922841-[2-(3,3,5,5-Tetramethylcyclohexyl)phenyl]piperazine

Product 1

HCID 23141795HCID 23141795, compound

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 1-[2-(3,3,5,5-tetramethylcyclohexyl)phenyl]piperazine (20 mg, 0.067 mmol) produced in Example (8b) in tetrahydrofuran (1 mL) were added cyclobutanone (7.0 mg, 0.1 mmol), sodium triacetoxyborohydride (28 mg, 0.13 mmol) and acetic acid (4 mg, 0.067 mmol) in that order, followed by stirring for 30 minutes at room temperature. Saturated aqueous solution of sodium hydrogencarbonate was added to the reaction mixture, extraction was performed with ethyl acetate, and the organic layer was concentrated. The resultant residue was purified by NH silica gel column chromatography (ethyl acetate/heptane) to give 1-cyclobutyl-4-[2-(3,3,5,5-tetramethylcyclohexyl)phenyl]piperazine. The obtained compound was dissolved in ethyl acetate, and a 4N solution of hydrogen chloride in ethyl acetate (0.025 mL, 0.100 mmol) was added. The solution was concentrated, and hexane was added to the obtained residue to produce a solid. The solid was triturated by sonication and the supernatant hexane solution was removed. The solid residue was dried under reduced pressure to give 17.6 mg of the title compound as a white solid.

Workup

  1. concentrationthe organic layer was concentrated
  2. customThe resultant residue was purified by NH silica gel column chromatography (ethyl acetate/heptane)

Sources & evidence

ORD record
ord-a6e1c41259484c54b8616fa1b6880419
Source dataset
uspto-grants-2008_09
Patent number
US07425554B2

Reaction notes

Loading…