2,6-Lutidine → 4'-{[4-(2-{[Tert-butyl(dimethyl)silyl]oxy}-3,3-dimethylbutyl)-2-methyl-5-oxo-7-propyl-4,5-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-6-yl]methyl}biphenyl-2-carbonitrile

HRID 2048228Notes

Reaction equation

HRID 2048228 reaction equation
[OH:1][CH:2]([C:33]([CH3:36])([CH3:35])[CH3:34])[CH2:3][N:4]1[C:9](=[O:10])[C:8]([CH2:11][C:12]2[CH:17]=[CH:16][C:15]([C:18]3[C:19]([C:24]#[N:25])=[CH:20][CH:21]=[CH:22][CH:23]=3)=[CH:14][CH:13]=2)=[C:7]([CH2:26][CH2:27][CH3:28])[N:6]2[N:29]=[C:30]([CH3:32])[N:31]=[C:5]12.N1C(C)=CC=CC=1C.O1CCCC1.FC(F)(F)S(O[Si:56]([C:59]([CH3:62])([CH3:61])[CH3:60])([CH3:58])[CH3:57])(=O)=O>C(OCC)(=O)C>[Si:56]([O:1][CH:2]([C:33]([CH3:35])([CH3:34])[CH3:36])[CH2:3][N:4]1[C:9](=[O:10])[C:8]([CH2:11][C:12]2[CH:13]=[CH:14][C:15]([C:18]3[C:19]([C:24]#[N:25])=[CH:20][CH:21]=[CH:22][CH:23]=3)=[CH:16][CH:17]=2)=[C:7]([CH2:26][CH2:27][CH3:28])[N:6]2[N:29]=[C:30]([CH3:32])[N:31]=[C:5]12)([C:59]([CH3:62])([CH3:61])[CH3:60])([CH3:58])[CH3:57]

Participants

6

Reactant 4

HCID 79372,6-LutidineHCID 8028TetrahydrofuranHCID 123564tert-Butyldimethylsilyl trifluoromethanesulphonateHCID 670092994'-{[4-(2-Hydroxy-3,3-dimethylbutyl)-2-methyl-5-oxo-7-propyl-4,5-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-6-yl]methyl}biphenyl-2-carbonitrile

Product 1

HCID 670090154'-{[4-(2-{[Tert-butyl(dimethyl)silyl]oxy}-3,3-dimethylbutyl)-2-methyl-5-oxo-7-propyl-4,5-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-6-yl]methyl}biphenyl-2-carbonitrileYield 81%

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Procedure

To a mixture of 4′-{[4-(2-hydroxy-3,3-dimethylbutyl)-2-methyl-5-oxo-7-propyl-4,5-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-6-yl]methyl}biphenyl-2-carbonitrile (0.9 g), 2,6-lutidine (0.32 mL) and tetrahydrofuran (20 mL) was added tert-butyl(dimethyl)silyl trifluoromethanesulfonate (0.64 mL), and the mixture was stirred at room temperature for 5 hr. The reaction mixture was diluted with ethyl acetate, washed with saturated aqueous potassium hydrogensulfate solution and then with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography to give the title compound as a colorless solid (0.9 g, 81%).

Workup

  1. washwashed with saturated aqueous potassium hydrogensulfate solution
  2. dry with materialwith saturated brine, and dried over anhydrous magnesium sulfate
  3. customThe solvent was evaporated under reduced pressure
  4. customthe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-ba46e702c72f49129cf19d9829fb5565
Source dataset
uspto-grants-2013_11
Patent number
US08592431B2

Reaction notes

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