Sodium Bicarbonate → (4-chloro-benzyl)-{5-[hydroxy-(7-triisopropylsilanyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)-methyl]-pyridin-2-yl}-carbamic acid tert-butyl ester

HRID 1692829Notes

Reaction equation

HRID 1692829 reaction equation
I[C:2]1[C:10]2[CH:9]=[N:8][CH:7]=[N:6][C:5]=2[N:4]([Si:11]([CH:18]([CH3:20])[CH3:19])([CH:15]([CH3:17])[CH3:16])[CH:12]([CH3:14])[CH3:13])[CH:3]=1.C([Mg]Cl)(C)C.[C:26]([O:30][C:31](=[O:49])[N:32]([CH2:41][C:42]1[CH:47]=[CH:46][C:45]([Cl:48])=[CH:44][CH:43]=1)[C:33]1[CH:38]=[CH:37][C:36]([CH:39]=[O:40])=[CH:35][N:34]=1)([CH3:29])([CH3:28])[CH3:27].C(=O)(O)[O-].[Na+]>O1CCCC1>[C:26]([O:30][C:31](=[O:49])[N:32]([CH2:41][C:42]1[CH:43]=[CH:44][C:45]([Cl:48])=[CH:46][CH:47]=1)[C:33]1[CH:38]=[CH:37][C:36]([CH:39]([OH:40])[C:2]2[C:10]3[CH:9]=[N:8][CH:7]=[N:6][C:5]=3[N:4]([Si:11]([CH:18]([CH3:20])[CH3:19])([CH:15]([CH3:17])[CH3:16])[CH:12]([CH3:14])[CH3:13])[CH:3]=2)=[CH:35][N:34]=1)([CH3:29])([CH3:27])[CH3:28]

Participants

6

Reactant 4

HCID 516892Sodium BicarbonateHCID 509865195-Iodo-7-(triisopropylsilyl)-7H-pyrrolo-[2,3-d]pyrimidineHCID 59593313(4-Chloro-benzyl)-(5-formyl-pyridin-2-yl)-carbamic acid tert-butyl esterHCID 178418918HCID 178418918, compound

Product 1

HCID 57963091(4-chloro-benzyl)-{5-[hydroxy-(7-triisopropylsilanyl-7H-pyrrolo[2,3-d]pyrimidin-5-yl)-methyl]-pyridin-2-yl}-carbamic acid tert-butyl esterYield 52%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Conditions

Temperature
-20 °C

Procedure

5-Iodo-7-triisopropylsilanyl-7H-pyrrolo[2,3-d]pyrimidine (38, 0.160 g, 0.4 mmol) was dissolved in 0.7 mL of tetrahydrofuran under an atmosphere of nitrogen. The reaction was cooled to −20° C. and isopropylmagnesium chloride (0.24 mL, 2.0 M in tetrahydrofuran, 0.48 mmol) was added and the reaction was stirred and allowed to come to 0° C. The reaction was cooled to −20° C. and (4-chloro-benzyl)-(5-formyl-pyridin-2-yl)-carbamic acid tert-butyl ester (13, 0.110 g, 0.32 mmol) in 2.0 mL of tetrahydrofuran was added to the reaction mixture. The reaction was stirred, allowing to come to 0° C., then poured into aqueous saturated sodium bicarbonate and extracted with ethyl acetate. The organic layer was washed with brine, dried over anhydrous sodium sulfate, filtered and the filtrate concentrated under vacuum. The resulting material was purified by silica gel column chromatography eluting with a gradient of 10-80% ethyl acetate in hexanes. Appropriate fractions were combined and concentrated under vacuum to provide the desired compound (43, 0.103 g, 52%). MS (ESI) [M+H+]+=622.94.

Workup

  1. customto come to 0° C
  2. temperatureThe reaction was cooled to −20° C.
  3. stirringThe reaction was stirred
  4. customto come to 0° C.
  5. extractionextracted with ethyl acetate
  6. washThe organic layer was washed with brine
  7. dry with materialdried over anhydrous sodium sulfate
  8. filtrationfiltered
  9. concentrationthe filtrate concentrated under vacuum
  10. customThe resulting material was purified by silica gel column chromatography
  11. washeluting with a gradient of 10-80% ethyl acetate in hexanes
  12. concentrationconcentrated under vacuum

Sources & evidence

ORD record
ord-5a7c55e717eb491b9a30e5039987ef8d
Source dataset
uspto-grants-2012_04
Patent number
US08158636B2

Reaction notes

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