Triethylamine → 2-(4-Bromo-3-formyl-phenoxy)-6-[2-(tert-butyl-dimethyl-silanyloxy)-ethylamino]-nicotinonitrile

HRID 1255687Notes

Reaction equation

HRID 1255687 reaction equation
[Br:1][C:2]1[CH:21]=[CH:20][C:5]([O:6][C:7]2[N:14]=[C:13]([N:15]([CH2:17][CH2:18][OH:19])C)[CH:12]=[CH:11][C:8]=2[C:9]#[N:10])=[CH:4][C:3]=1[CH:22]=[O:23].[C:24]([Si:28](Cl)([CH3:30])[CH3:29])([CH3:27])([CH3:26])[CH3:25].CCN(CC)CC>C1COCC1.CN(C1C=CN=CC=1)C>[Br:1][C:2]1[CH:21]=[CH:20][C:5]([O:6][C:7]2[N:14]=[C:13]([NH:15][CH2:17][CH2:18][O:19][Si:28]([C:24]([CH3:27])([CH3:26])[CH3:25])([CH3:30])[CH3:29])[CH:12]=[CH:11][C:8]=2[C:9]#[N:10])=[CH:4][C:3]=1[CH:22]=[O:23]

Participants

6

Reactant 3

HCID 8471TriethylamineHCID 28928tert-Butyldimethylsilyl chlorideHCID 866364302-(4-Bromo-3-formyl-phenoxy)-6-[(2-hydroxy-ethyl)-methyl-amino]-nicotinonitrile

Product 1

HCID 866364382-(4-Bromo-3-formyl-phenoxy)-6-[2-(tert-butyl-dimethyl-silanyloxy)-ethylamino]-nicotinonitrileYield 89.1%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 2-(4-bromo-3-formyl-phenoxy)-6-[(2-hydroxy-ethyl)-methyl-amino]-nicotinonitrile (7, 0.94 g, 2.59 mmol) in THF (anhydrous, 100 mL) were added tert-butyl chloro-dimethyl silane (0.86 g, 5.7 mmol), Et3N (0.8 mL, 5.7 mmol) and cat. amount of DMAP. The solution was stirred at room temperature overnight. The solution was filtered and concentrated in vacuo. Purification was accomplished by silica gel chromatography, eluting with 5%-50% EtOAc/hexanes gradient, to afford 1.1 g (89% yield) of the title compound.

Workup

  1. filtrationThe solution was filtered
  2. concentrationconcentrated in vacuo
  3. customPurification
  4. washeluting with 5%-50% EtOAc/hexanes gradient

Sources & evidence

ORD record
ord-6c8eb86934614e7d955b78a20d366c5a
Source dataset
uspto-grants-2013_06
Patent number
US08461135B2

Reaction notes

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