Sodium hydride → (S)-ethyl 2-(7-(4-(allyloxy)-4-methylpiperidin-1-yl)-2-(((5-fluoro-2-((S)-pent-4-en-2-yloxy)benzyl)oxy)methyl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate

HRID 921115Notes

Reaction equation

HRID 921115 reaction equation
[CH2:1]([O:4][C:5]1([CH3:34])[CH2:10][CH2:9][N:8]([C:11]2[N:16]3[N:17]=[C:18]([CH2:20]I)[CH:19]=[C:15]3[N:14]=[C:13]([CH3:22])[C:12]=2[C@H:23]([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])[C:24]([O:26][CH2:27][CH3:28])=[O:25])[CH2:7][CH2:6]1)[CH:2]=[CH2:3].[F:35][C:36]1[CH:37]=[CH:38][C:39]([O:44][C@H:45]([CH2:47][CH:48]=[CH2:49])[CH3:46])=[C:40]([CH2:42][OH:43])[CH:41]=1.[H-].[Na+]>CN(C=O)C.CCOC(C)=O>[CH2:1]([O:4][C:5]1([CH3:34])[CH2:10][CH2:9][N:8]([C:11]2[N:16]3[N:17]=[C:18]([CH2:20][O:43][CH2:42][C:40]4[CH:41]=[C:36]([F:35])[CH:37]=[CH:38][C:39]=4[O:44][C@H:45]([CH2:47][CH:48]=[CH2:49])[CH3:46])[CH:19]=[C:15]3[N:14]=[C:13]([CH3:22])[C:12]=2[C@H:23]([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])[C:24]([O:26][CH2:27][CH3:28])=[O:25])[CH2:7][CH2:6]1)[CH:2]=[CH2:3]

Participants

6

Reactant 3

HCID 24758Sodium hydrideHCID 118307030(S)-(5-fluoro-2-(pent-4-en-2-yloxy)phenyl)methanolHCID 118318796(S)-ethyl 2-(7-(4-(allyloxy)-4-methylpiperidin-1-yl)-2-(iodomethyl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate

Product 1

HCID 118318797(S)-ethyl 2-(7-(4-(allyloxy)-4-methylpiperidin-1-yl)-2-(((5-fluoro-2-((S)-pent-4-en-2-yloxy)benzyl)oxy)methyl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetateYield 26%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of (S)-ethyl 2-(7-(4-(allyloxy)-4-methylpiperidin-1-yl)-2-(iodomethyl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate (0.50 g, 0.855 mmol) and (S)-(5-fluoro-2-(pent-4-en-2-yloxy)phenyl)methanol (0.216 g, 1.027 mmol) in DMF (10 ml) was added sodium hydride (0.051 g, 1.283 mmol) and the resulting yellow mixture was stirred at rt. After 3 h, the mixture was diluted with EtOAc and washed with 1N HCl followed by water then brine. The organic phase was dried (Na2SO4), filtered and concentrated. The residue was purified by flash chromatography (Biotage; 0%-100% EtOAc/hexane; 10 CV) to give (S)-ethyl 2-(7-(4-(allyloxy)-4-methylpiperidin-1-yl)-2-(((5-fluoro-2-((S)-pent-4-en-2-yloxy)benzyl)oxy)methyl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate (0.1481 g, 0.222 mmol, 26.0% yield) as a red oil. LCMS (M+H) calcd for C37H52FN4O6: 667.38. found: 667.6.

Workup

  1. washwashed with 1N HCl
  2. dry with materialThe organic phase was dried (Na2SO4)
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customThe residue was purified by flash chromatography (Biotage; 0%-100% EtOAc/hexane; 10 CV)

Sources & evidence

ORD record
ord-29035676eafe424baed0d6ab3bf5373b
Source dataset
uspto-grants-2016_03
Patent number
US09273067B2

Reaction notes

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