Triethylamine → [2-(3-Methanesulfonylphenyl)ethynyl]trimethylsilane

Participants

Reaction Conditions

Reaction Steps

To a solution of 0.23 g (1 mmol) of 1-bromo-3-methanesulfonyl-benzene in benzene (2 mL) was added 40 mg (0.1 mmol) of PdCl2(Ph3P)2, 30 mg (0.1 mmol) CuI, triethylamine (1 mL) and 0.3 mL of ethynyl-trimethyl-silane. The reaction mixture was heated at 70° C. for 3 h After removal of solvent, the residue was purified by column chromatography elution with hexanes/ethyl acetate (v/v=7:1 then 5:1) to give 0.24 g (95%) of (3-methanesulfonyl-phenylethynyl)-trimethylsilane. 1H NMR (CDCl3, 400 MHz): δ 8.4 (s, 1H), 7.88 (d, 1H), 7.70 (d, 1H), 7.52 (dd, 1H), 3.05 (s, 3H), 0.27 (s, 9H) ppm.

Provenance & Evidence