1-(Trimethylsilyl)prop-1-yne → HCID 66597967, compound

HRID 422337Notes

Reaction equation

HRID 422337 reaction equation
[Li]CCCC.[CH3:6][Si:7]([CH3:12])([CH3:11])[C:8]#[C:9][CH3:10].Cl[CH2:14][C:15]1[N:19]([CH3:20])[C:18]2[CH:21]=[CH:22][CH:23]=[CH:24][C:17]=2[N:16]=1>C1COCC1>[CH3:20][N:19]1[C:18]2[CH:21]=[CH:22][CH:23]=[CH:24][C:17]=2[N:16]=[C:15]1[CH2:14][CH2:10][C:9]#[C:8][Si:7]([CH3:12])([CH3:11])[CH3:6]

Participants

5

Reactant 3

HCID 803631-(Trimethylsilyl)prop-1-yneHCID 2480442-(Chloromethyl)-1-methylbenzimidazoleHCID 178418339Butyllithium

Product 1

HCID 66597967HCID 66597967, compoundYield 23%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Conditions

Temperature
-78 °C

Procedure

n-BuLi (1.35 mL, 3.39 mmol, 2.5 M) was added to a solution of trimethyl-prop-1-ynyl-silane (0.55 mL, 3.69 mmol) in THF (1 mL) at −78° C. After 2 hours, a solution of 2-chloromethyl-1-methyl-1H-benzoimidazole (556 mg, 3.08 mmol) in THF (5 mL) was added to the reaction mixture at −78° C. then the reaction mixture was stirred for 30 min at −78° C. and 1 hour at room temperature and was quenched with water. The aqueous phase was extracted with DCM. The organic phase was washed with water, dried over MgSO4, filtered and evaporated to yield 1-methyl-2-(4-trimethylsilanyl-but-3-ynyl)-1H-benzoimidazole (178 mg, 0.69 mmol, 23%).

Workup

  1. customwas quenched with water
  2. extractionThe aqueous phase was extracted with DCM
  3. washThe organic phase was washed with water
  4. dry with materialdried over MgSO4
  5. filtrationfiltered
  6. customevaporated

Sources & evidence

ORD record
ord-cb0f7de90ef74d91b13f79990360995c
Source dataset
uspto-grants-2012_01
Patent number
US08101637B2

Reaction notes

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