Rf = 0.41 (SiO2, 1:4 EtOAc-hexanes)
M.p. 108-109.5 °C
1H NMR (500 MHz, CDCl3) δ 8.48 (d, J = 8.3, 1H), 8.42 (s, 1H), 8.18-8.16 (m, 1H), 7.42-7.37 (m, 2H), 3.97 (s, 3H), 1.56 (s, 9H)
13C NMR (126 MHz, CDCl3) δ 177.2, 164.5, 137.1, 131.4, 126.3, 125.8, 124.6, 121.2, 117.0, 112.8, 51.5, 41.6, 28.6
IR (film, cm-1) 3054.5, 2986.6, 2953.0, 1706.4, 1583.5, 1559.2, 1478.1, 1448.7, 1382.2, 1352.2, 1319.1, 1265.4, 1204.1, 1151.8, 1105.5, 1047.4, 898.7, 739.1, 704.7 cm-1
MS (EI, m/z) [M]+ calculated for C15H17N1O3+ 259.1203, found 259.1202
Anal. Calcd for C15H17N1O3: C, 69.48; H, 6.61; N, 5.40. Found: C, 69.61; H, 6.68; N, 5.40