Hydrochloric Acid → HCID 178438681, compound

HRID 2048401Notes

Reaction equation

HRID 2048401 reaction equation
[OH:1][C@H:2]1[CH2:7][CH2:6][C@H:5]([N:8]2[C:13](=[O:14])[C:12]([CH2:15][C:16]3[CH:21]=[CH:20][C:19]([C:22]4[C:23]([C:28]#[N:29])=[CH:24][CH:25]=[CH:26][CH:27]=4)=[CH:18][CH:17]=3)=[C:11]([CH2:30][CH2:31][CH3:32])[N:10]3[N:33]=[CH:34][CH:35]=[C:9]23)[CH2:4][CH2:3]1.Br[CH2:37][C:38]([O:40][C:41]([CH3:44])([CH3:43])[CH3:42])=[O:39].Cl>S([O-])(O)(=O)=O.C([N+](CCCC)(CCCC)CCCC)CCC.C1(C)C=CC=CC=1.C(OCC)(=O)C>[C:28]([C:23]1[CH:24]=[CH:25][CH:26]=[CH:27][C:22]=1[C:19]1[CH:20]=[CH:21][C:16]([CH2:15][C:12]2[C:13](=[O:14])[N:8]([C@H:5]3[CH2:4][CH2:3][C@H:2]([O:1][CH2:37][C:38]([O:40][C:41]([CH3:44])([CH3:43])[CH3:42])=[O:39])[CH2:7][CH2:6]3)[C:9]3[N:10]([N:33]=[CH:34][CH:35]=3)[C:11]=2[CH2:30][CH2:31][CH3:32])=[CH:17][CH:18]=1)#[N:29]

Participants

7

Reactant 3

HCID 313Hydrochloric AcidHCID 79177tert-Butyl bromoacetateHCID 178438588HCID 178438588, compound

Product 1

HCID 178438681HCID 178438681, compoundYield 93%

Reagents, catalysts & solvents 3

HCID 94433Tetrabutylammonium hydrogen sulfateCatalystHCID 1140TolueneSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
50 °C

Procedure

To a suspension of 4′-{[4-(trans-4-hydroxycyclohexyl)-5-oxo-7-propyl-4,5-dihydropyrazolo[1,5-a]pyrimidin-6-yl]methyl}biphenyl-2-carbonitrile (21.1 g) and tetrabutylammonium hydrogen sulfate (1.5 g) in toluene (160 mL)-50% sodium hydroxide (160 mL) was added dropwise tert-butyl bromoacetate (20 mL) at 50° C., and the mixture was stirred at 50° C. for 1.5 hr. The mixture was allowed to cool to room temperature, diluted with ethyl acetate and then neutralized with 6M hydrochloric acid. The mixture was extracted with ethyl acetate, and the organic layer was washed with water and brine, dried over anhydrous magnesium sulfate, and concentrated. The residue was purified by silica gel column chromatography to give the title compound as an amorphous pale-yellow solid (24.4 g, 93%).

Workup

  1. temperatureto cool to room temperature
  2. extractionThe mixture was extracted with ethyl acetate
  3. washthe organic layer was washed with water and brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. concentrationconcentrated
  6. customThe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-17fccf5a3901424cab1df2667d7a441a
Source dataset
uspto-grants-2013_11
Patent number
US08592431B2

Reaction notes

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