Iodoethane → 2-Chloro-N-(2-ethoxyethyl)-N-ethyl-6-(trimethylsilyl)benzamide

HRID 1068313Notes

Reaction equation

HRID 1068313 reaction equation
C[Si]([N-][Si](C)(C)C)(C)C.[Na+].[CH2:11]([O:13][CH2:14][CH2:15][NH:16][C:17](=[O:29])[C:18]1[C:23]([Si:24]([CH3:27])([CH3:26])[CH3:25])=[CH:22][CH:21]=[CH:20][C:19]=1[Cl:28])[CH3:12].[CH2:30](I)[CH3:31]>C1COCC1>[Cl:28][C:19]1[CH:20]=[CH:21][CH:22]=[C:23]([Si:24]([CH3:27])([CH3:26])[CH3:25])[C:18]=1[C:17]([N:16]([CH2:15][CH2:14][O:13][CH2:11][CH3:12])[CH2:30][CH3:31])=[O:29]

Participants

5

Reactant 3

HCID 6340IodoethaneHCID 2724254Sodium bis(trimethylsilyl)amideHCID 18630026N-(2-ethoxyethyl)-2-chloro-6-(trimethylsilyl)benzamide

Product 1

HCID 186302162-Chloro-N-(2-ethoxyethyl)-N-ethyl-6-(trimethylsilyl)benzamideYield 83%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent3×

Procedure

A 1M THF solution of sodium bis(trimethylsilyl)-amide (7.7 mL, 7.7 mmol) was added dropwise over 5 min to a solution of N-(2-ethoxyethyl)-2-chloro-6-(trimethylsilyl)benzamide (2.1 g, 7 mmol) in THF (30 mL). The resulting mixture was stirred for 1 h at RT, then a solution of ethyl iodide (1.31 g, 8.4 mmol) in THF (15 mL) was added with a mild exotherm. The resulting reaction mixture was stirred overnight, then was partitioned between ethyl acetate and dilute aq citric acid. The ethyl acetate phase was washed with sat aq NaHCO3 followed with brine, then was dried (MgSO4) and concentrated to afford 1.9 g of the title compound as an amber oil, an 83% yield.

Workup

  1. customThe resulting reaction mixture
  2. stirringwas stirred overnight
  3. customwas partitioned between ethyl acetate and dilute aq citric acid
  4. washThe ethyl acetate phase was washed with sat aq NaHCO3
  5. dry with materialwas dried (MgSO4)
  6. concentrationconcentrated

Sources & evidence

ORD record
ord-6a0711bc357d4e33aff2346feebba344
Source dataset
uspto-grants-2001_06
Patent number
US06248894B1

Reaction notes

Loading…