Diethyl Malonate → Diethyl 2-[3-(1-octynyl)-2-furanylmethylene]propan-1,3-dioate

Beteiligte Stoffe

Reaktionsschritte

Reaction of 3-(1-octynyl)furan-2-carboxaldehyde (2.04 g, 10 mmole from Example 14) with diethyl malonate (1.98 g, 1.25 eq) as described in Example 3 gave, after chromatography on silica (DCM:Hexane 1:1) 1.96 (57%) of the title compound as an oil, νmax (film) 2930, 2230, 1740, 1725, 1625, 1240, 1210, 1100 cm-1 ; δ(CDCl3) 0.89(3H, distorted t), 1.32(3H, t, J=7.5 Hz), 1.35(3H, t, J=7.5 Hz), 1.40(8H, m), 2.40(2H, t, J=6.5 Hz), 4.28(2H, q, J=7.5 Hz), 4.36(2H, q, J=7.5 Hz), 6.45(1H, d, J=2 Hz), 7.40(1H, d, J=2 Hz), 7.60(1H, s).

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