Pyridine → N-[3-Bromo-2-(tert-butyl-dimethyl-silanyloxymethyl)-phenyl]-4-cyclopropyl-2-methyl-benzamide

HRID 2069828Notes

Reaction equation

HRID 2069828 reaction equation
[Br:1][C:2]1[C:3]([C:9]([CH3:17])([CH3:16])[O:10][SiH2:11][C:12]([CH3:15])([CH3:14])[CH3:13])=[C:4]([NH2:8])[CH:5]=[CH:6][CH:7]=1.N1C=CC=CC=1.[CH:24]1([C:27]2[CH:35]=[CH:34][C:30]([C:31](Cl)=[O:32])=[C:29]([CH3:36])[CH:28]=2)[CH2:26][CH2:25]1>C1(C)C=CC=CC=1.CCCCCC>[Br:1][C:2]1[C:3]([C:9]([CH3:17])([CH3:16])[O:10][SiH2:11][C:12]([CH3:15])([CH3:14])[CH3:13])=[C:4]([NH:8][C:31](=[O:32])[C:30]2[CH:34]=[CH:35][C:27]([CH:24]3[CH2:26][CH2:25]3)=[CH:28][C:29]=2[CH3:36])[CH:5]=[CH:6][CH:7]=1

Participants

6

Reactant 3

HCID 1049PyridineHCID 592165404-Cyclopropyl-2-methylbenzoyl chlorideHCID 178455443HCID 178455443, compound

Product 1

HCID 137328400N-[3-Bromo-2-(tert-butyl-dimethyl-silanyloxymethyl)-phenyl]-4-cyclopropyl-2-methyl-benzamideYield 98.7%

Reagents, catalysts & solvents 2

HCID 1140TolueneSolvent2×HCID 8058HexaneSolvent

Procedure

To a solution of [3-bromo-2-(tert-butyl-dimethyl-silanyloxymethyl)-phenylamine (21.28 g, 67.3 mmol) and anhydrous pyridine (6.5 mL, 80 mmol) in 50 mL of anhydrous toluene was added a solution of 4-cyclopropyl-2-methylbenzoyl chloride (13.25 g, 68.1 mmol) in 50 mL anhydrous toluene dropwise. A precipitate formed immediately upon addition. Stirred the mixture at ambient temperature under nitrogen overnight. Diluted the reaction mixture with 125 mL hexane and filtered off the precipitate. Washed the filtrate with 2×200 mL 1.0 M KHSO4, 2×200 mL 5% NaHCO3, and 250 mL water. Dried the solution over MgSO4 and concentrated in vacuo to obtain N-[3-Bromo-2-(tert-butyl-dimethyl-silanyloxymethyl)-phenyl]-4-cyclopropyl-2-methyl-benzamide as a waxy light brown solid (31.54 g, 66.4 mmol). MS (ESI) 474, 476.0 (M+H)+.

Workup

  1. customA precipitate formed immediately upon addition
  2. filtrationfiltered off the precipitate
  3. washWashed the filtrate with 2×200 mL 1.0 M KHSO4, 2×200 mL 5% NaHCO3, and 250 mL water
  4. dry with materialDried the solution over MgSO4
  5. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-79d012936ea1417c8c9b7cc0ec4e45c9
Source dataset
uspto-grants-2012_10
Patent number
US08299077B2

Reaction notes

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