Water → HCID 178440641, compound

HRID 1688786Notes

Reaction equation

HRID 1688786 reaction equation
[CH2:1]([C:5]1[N:10]2[N:11]=[CH:12][CH:13]=[C:9]2[N:8]([C@H:14]2[CH2:19][CH2:18][C@H:17]([OH:20])[CH2:16][CH2:15]2)[C:7](=[O:21])[C:6]=1[CH2:22][C:23]1[CH:28]=[CH:27][C:26]([C:29]2[C:30]([C:35]#[N:36])=[CH:31][CH:32]=[CH:33][CH:34]=2)=[CH:25][CH:24]=1)[CH2:2][CH2:3][CH3:4].[N+](=[CH:39][C:40]([O:42][CH2:43][CH3:44])=[O:41])=[N-].C(OCC)(=O)C.O>C(Cl)Cl.C([O-])(=O)C.[Rh+3].C([O-])(=O)C.C([O-])(=O)C>[CH2:1]([C:5]1[N:10]2[N:11]=[CH:12][CH:13]=[C:9]2[N:8]([C@H:14]2[CH2:19][CH2:18][C@H:17]([O:20][CH2:39][C:40]([O:42][CH2:43][CH3:44])=[O:41])[CH2:16][CH2:15]2)[C:7](=[O:21])[C:6]=1[CH2:22][C:23]1[CH:24]=[CH:25][C:26]([C:29]2[CH:34]=[CH:33][CH:32]=[CH:31][C:30]=2[C:35]#[N:36])=[CH:27][CH:28]=1)[CH2:2][CH2:3][CH3:4]

Participants

7

Reactant 4

HCID 962WaterHCID 8857Ethyl AcetateHCID 12192Ethyl diazoacetateHCID 178440632HCID 178440632, compound

Product 1

HCID 178440641HCID 178440641, compoundYield 61%

Reagents, catalysts & solvents 2

HCID 168478Rhodium acetateCatalystHCID 6344DichloromethaneSolvent2×

Procedure

To a solution of 4′-{[7-butyl-4-(trans-4-hydroxycyclohexyl)-5-oxo-4,5-dihydropyrazolo[1,5-a]pyrimidin-6-yl]methyl}biphenyl-2-carbonitrile (2.9 g) and rhodium acetate (dimer, 0.070 g) in methylene chloride (15 mL) was added dropwise a solution of ethyl diazoacetate (3.1 mL) in methylene chloride (3 mL), and the mixture was stirred for 3 hr. Ethyl acetate and water were added to the reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed with water and then with saturated brine, dried over anhydrous magnesium sulfate, and concentrated. The residue was purified by silica gel column chromatography to give the title compound as a pale-yellow amorphous solid (2.1 g, 61%).

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe organic layer was washed with water
  3. dry with materialwith saturated brine, dried over anhydrous magnesium sulfate
  4. concentrationconcentrated
  5. customThe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-bc55ff2a18b3496da87695d336f2b331
Source dataset
uspto-grants-2012_04
Patent number
US08148383B2

Reaction notes

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