反应条件
1: 1.) LDA / 1.) THF, -50 deg C, 40 min; -30 deg C, 40 min, 2.) HMPA, -50 deg C, 1 h; -20 deg C, 2 h; 0 deg C, 1 h 2: 1 N KOH / ethanol / 4 h / 50 °C 3: benzenesulfonyl chloride, pyridine / 0 °C 4: H2 / 10percent Pd-C / ethyl acetate 5: 85.8 percent / PPh3, diethyl azodicarboxylate / tetrahydrofuran / Ambient temperature View Scheme
参考文献
Fleming, Ian; Lawrence, Nicholas J.
Journal of the Chemical Society - Perkin Transactions 1, 1998 , # 17 p. 2679 - 2686