Trimethylsilylacetylene → HCID 66812844, compound

Participants

Reaction Steps

To the suspension of 2-chloro-6-iodo-4-methanesulfonylaniline (886.9 mg, 2.7 mmol.), Pd(PPh3)2Cl2 (94.5 mg, 0.13 mmol), and CuI (24.3 mg, 0.13 mmol.) was added triethyl amine (2 mL), and the suspension was slowly treated with (trimethylsilyl)acetylene (0.22 mL, 0.16 mmol.) at 0° C. The reaction mixture was stirred at room temperature for ˜16 h. Solvent was removed under vacuum. The residue was diluted with ethyl acetate, and filtered through Celite. The filtrate was washed with saturated NaCl, water, dried over anhydrous sodium sulfate and concentrated. The residue was purified by column chromatography on silica gel using 20% ethyl acetate—hexane to give 2-chloro-4-methanesulfonyl-6-trimethylsilanylethynyl-phenylamine (632 mg, 78%). The 1H NMR (500 MHz, CDCl3) spectrum was: 0.27 (s, 9H), 3.01 (s, 3H), 5.17 (s, 2H), 7.77 (d, J=2.5 Hz, 1H), 7.78 (d, J=2.5 Hz, 1H).

Provenance & Evidence