5-Phenyl-1-pentyne → HCID 25221835, compound

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Reaction Steps

This product was prepared from toluene-4-sulfonic acid 1-methyl-5-trifluoromethyl-1H-pyrazol-3-yl ester and pent-4-ynyl-benzene following the general procedure for the Sonogashira cross-coupling reaction described above. Chromatography eluent: heptane/DCM 7:3; yield (86 mg, 60%); 1H NMR δ (CDCl3): 7.31-7.25 (m, 2H), 7.22-7.16 (m, 3H), 6.64 (s, 1H), 3.98 (s, 3H), 2.78 (t, J=7.44 Hz, 2H), 2.42 (t, J=7.04 Hz, 2H), 1.95 (p, J=7.33 Hz, 2H); LCMS m/z: 292.

Provenance & Evidence