trimethyl(prop-1-ynyl)silane

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:-75.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a stirred solution of trimethyl(prop-1-ynyl)silane (3 g, 26.7 mmol) in dry THF (100 mL) cooled at −72° C., was added drop by drop 2.5 N nBuLi in hexane solution (10.5 mL, 26.2 mmol). The resulting mixture was stirred at −75° C. for 11 h 30. Then 2-(chloromethyl)oxirane (2.42 g, 26.2 mmol) in dry THF (2 mL) was slowly added. The resulting mixture was stirred at −72° C. for 1 h 30, then warmed up to room temperature for an additional 1 h. The reaction mixture was quenched with water and extracted with diethyl ether. The organic phase was dried over MgSO4, filtered and concentrated under reduced pressure to afford 4.50 g trimethyl(4(oxiran-2-yl)but-1-ynyl)silane (Yield: 100%) as a yellow oil which was used in the next step without further purification. The resulting mixture was stirred at −72° C. for 1 h 30 warmed up to room temperature for an additional 1 h The reaction mixture was quenched with water extracted with diethyl ether The organic phase was dried over MgSO4 filtered concentrated under reduced pressure

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The title compound was prepared in accordance with the general method of Example 191(D), from of 1-benzyl-2-(chloromethyl)-1H-benzo[d]imidazole (500 mg, 1.9 mmol) and trimethyl(prop-1-ynyl)silane (262 mg, 2.34 mmol). 1-benzyl-2-(4-(trimethylsilyl)but-3-ynyl)-1H-benzo[d]imidazole (647 mg, Yield: 100%) was obtained as a brown oil which was used in the next step without purification.