“…677 cm -1 ; 1 H NMR (300 MHz, CDCl 3 , 25°C): δ= 4.80 (d, 3 J H,H= 6.0 Hz, 2H, -O-CH 2 -), 5.37-5.51 (m, 2H, -CH=CH 2 ), 5.96-6.09 (m, 1H, -CH=CH 2 ), 7.41 (d,3 J H,H = 9.0 Hz, 2H, m-NO 2 -Ar), 8.30 (d,3 J H,H = 9.0 Hz, 2H, o-NO 2 -Ar), in agreement with previously reported values[23] ;13 C NMR (75 MHz, CDCl 3 , 25°C): δ = 69.8 (-O-CH 2 -), 120.2 (=CH 2 ), [121.8, 125.3 and 130.6] (3°), [145.4, 152.3 and 155.5] (4°); m/z (CI) 241 [M+NH 4 ] + , 211, 194, 157, 148, 110, 108 (Found: [M+NH 4 ] + , 241.0826. C 10 H 9 NO 5 requires [M+NH 4 ] + , 241.0824) (Found: C, 53.73; H, 3.93; N, 6.19.…”