反应详情

Compound 15 was subjected to general procedure J. Yield=89%. TLC: Rf=0.31 (25% EtOAc/Hexane). 1H NMR (400 MHz, CDCl3): δ1.30 (t, 3H), 2.35 (m, 2H), 4.10 (s, 2H), 4.25 (q, 2H), 4.90 (m, 1H), 6.05 (m, 1H), 6.20 (m, 1H), 6.30 (m, 1H), 8.20 (d, 2H), 8.30 (d, 2H). Subsequent subjection of the product to general procedure E gave compound 30. Yield=91%. TLC: Rf=0.18 (50% EtOAc/Hexane). 1H NMR (400 MHz, CDCl3): δ2.00 (m, 1H), 2.25 (m, 1H), 3.75 (s, 3H), 4.05 (s, 2H), 4.80 (m, 1H), 5.05 (m, 1H), 6.05 (s, 2H).