Propynal → (E)-3-[4,5-bis(4-fluorophenyl)-2-(1-methylethyl)-1H-imidazol-1-yl]-2-propenal

関与物質

反応手順

A solution of 4,5-bis(4-fluorophenyl)-2-(1-methylethyl)-1H-imidazole (200 mg) and propiolaldehyde (75% solution in toluene, 0.15 ml) in dry THF (15 ml) were heated under reflux, under nitrogen for 24 h. The residue was dissolved in acetone and absorbed onto silica gel before purifying by CC eluting with petroleum ether (b.p. 40°-60°)/ethyl acetate (2:1) to give the title compound (84 mg) as a pale yellow solid, δ(CDCl3), 1.49 (d,J=7 Hz, Me2CH), 3.25 (septet, J=7 Hz, Me2CH), 5.67 (dd,J=15 Hz, 7 Hz,CH=CH.CHO), 6.95 and 7.10-7.60 (t,J=9 Hz and m, CH=CH.CHO and aromatic protons), 9.40 (d, J=7 Hz, CH=CH.CHO).

情報源と証拠