反应详情

Elimination product from the reaction attempted cycloaddition of 4g with LiClO4/Et3N in diethyl ether. 1H NMR (400 MHz, CDCl3) δ 8.19 (br s, 1H), 7.49-7.29 (m, 5H), 5.55 (pent, J=1 Hz, 1H), 5.32 (dq, J=1.6, 1.0 Hz, 1H), 4.96 (s, 2H), and 1.92 (dd, J=1.6, 1.2 Hz, 3H); 13C NMR (101 MHz, CDCl3) δ 167.2, 138.0, 135.4, 129.5, 129.0, 128.8, 120.4, 78.3, and 18.6; IR (film) 3199 (br), 3064, 3032, 2954, 2878, 1658, 1620, 1496, 1453, 1372, 1322, 1209, 1039 cm-1; HR-ESIMS calculated for C11H13NNaO2 (M+Na)+ 215.0871, found 215.0869.