Potassium Phosphate, Tribasic → [5-Cyclopropyl-2-(3-hexyl-phenyl)-3-methyl-3H-imidazol-4-yl]-(4-pyrrolidin-1-yl-piperidin-1-yl)-methanone

HRID 545378Notes

Reaction equation

HRID 545378 reaction equation
[CH2:1]([C:7]1[CH:8]=[C:9]([C:13]2[N:17]([CH3:18])[C:16]([C:19]([N:21]3[CH2:26][CH2:25][CH:24]([N:27]4[CH2:31][CH2:30][CH2:29][CH2:28]4)[CH2:23][CH2:22]3)=[O:20])=[C:15](I)[N:14]=2)[CH:10]=[CH:11][CH:12]=1)[CH2:2][CH2:3][CH2:4][CH2:5][CH3:6].[CH:33]1(B(O)O)[CH2:35][CH2:34]1.P([O-])([O-])([O-])=O.[K+].[K+].[K+].C1(P(C2CCCCC2)C2CCCCC2)CCCCC1>C1(C)C=CC=CC=1.C([O-])(=O)C.[Pd+2].C([O-])(=O)C.O>[CH:33]1([C:15]2[N:14]=[C:13]([C:9]3[CH:10]=[CH:11][CH:12]=[C:7]([CH2:1][CH2:2][CH2:3][CH2:4][CH2:5][CH3:6])[CH:8]=3)[N:17]([CH3:18])[C:16]=2[C:19]([N:21]2[CH2:22][CH2:23][CH:24]([N:27]3[CH2:31][CH2:30][CH2:29][CH2:28]3)[CH2:25][CH2:26]2)=[O:20])[CH2:35][CH2:34]1

Participants

8

Reactant 4

HCID 62657Potassium Phosphate, TribasicHCID 75806TricyclohexylphosphineHCID 2760897Cyclopropylboronic acidHCID 57541122[2-(3-Hexyl-phenyl)-5-iodo-3-methyl-3H-imidazol-4-yl]-(4-pyrrolidin-1-yl-piperidin-1-yl)-methanone

Product 1

HCID 57541173[5-Cyclopropyl-2-(3-hexyl-phenyl)-3-methyl-3H-imidazol-4-yl]-(4-pyrrolidin-1-yl-piperidin-1-yl)-methanoneYield 33.3%

Reagents, catalysts & solvents 3

HCID 167845palladium(II) acetateCatalystHCID 962WaterSolventHCID 1140TolueneSolvent

Conditions

Temperature
100 °C

Procedure

A suspension of 0.275 g (0.50 mmol) of [2-(3-hexyl-phenyl)-5-iodo-3-methyl-3H-imidazol-4-yl]-(4-pyrrolidin-1-yl-piperidin-1-yl)-methanone (example 2), 0.086 g (1.0 mmol) of cyclopropyl boronic acid and 0.573 g (2.7 mmol) of tribasic potassium phosphate in 10 ml of toluene was treated with 0.30 ml of water, followed by 0.031 g (0.11 mmol) of tricyclohexylphosphine and 0.012 g (0.055 mmol) of palladium(II)acetate. This reaction mixture was heated up to 100° C., stirred for 18 hours at this temperature and subsequently cooled down to RT. The reaction mixture was then poured into crashed ice and extracted twice with EtOAc; the organic phases were washed with water, dried over magnesium sulfate, filtered and evaporated. The residue was purified by flash column chromatography (CH2Cl2/MeOH 1:0 to 4:1) to give 0.077 g (33%) of the title compound as light yellow oil. MS: 463.4 (MH+).

Workup

  1. temperaturesubsequently cooled down to RT
  2. additionThe reaction mixture was then poured
  3. extractionextracted twice with EtOAc
  4. washthe organic phases were washed with water
  5. dry with materialdried over magnesium sulfate
  6. filtrationfiltered
  7. customevaporated
  8. customThe residue was purified by flash column chromatography (CH2Cl2/MeOH 1:0 to 4:1)

Sources & evidence

ORD record
ord-d3b657b313ab477483b1025b3ce9fb97
Source dataset
uspto-grants-2011_05
Patent number
US07935707B2

Reaction notes

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