Diisopropylethylamine → 3-(4-Pyrrolidin-1-ylmethylphenyl)propynoic acid-(4-prop-1-ynylphenyl)amide

Participants

Reaction Steps

10 mL of acetonitrile is degassed and combined with 0.35 mL (2 mmol) of ethyldiisopropylamine and 0.2 g (0.69 mmol) of 1-(4-iodobenzyl)pyrrolidine. Then the mixture is again degassed and 13 mg of copper (I) iodide, 34 mg of tetrakistriphenylphosphine palladium, and 137 mg (0.75 mmol) of propynoic acid-(4-prop-1-ynylphenyl)amide are then added in succession. The reaction mixture is stirred for 24 hours at ambient temperature and then combined with 60 mg of propynoic acid-(4-prop-1-ynylphenyl)amide. After 24 hours, the mixture is evaporated down. The purification is carried out by column chromatography on silica gel (dichloromethane/methanol/ammonia (30:1:0.1 to 20:1:0.1)). Yield: 24 mg (10% of theory); C23H22N2O (M=342.44); calc.: molecular ion peak (M+H)+: 343; found: molecular ion peak (M+H)+: 343; Rf value: 0.2 (silica gel, dichloromethane/methanol/ammonia=10:1:0.1).

Provenance & Evidence