反应详情

Using the procedure of Example 5B, but replacing ethyl 2-isopropyl-4-thiazolecarboxylate with ethyl 2-isopropylthiazole-5carboxylate provided, after silica gel chromatography using 3% methanol in chloroform, the desired compound, Rf 0.3, (5% methanol in chloroform) in 25% yield. 1H NMR (d6 -DMSO) δ 1.30 (d, J=7 Hz, 6 H), 3.22 (heptet, J=7 Hz, 1 H), 4.61 (dd, J=6, 1 Hz, 2 H), 5.45 (t, J=6 Hz, 1 H), 7.48 (br s, 1 H).

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