反应详情

To a mixture of the 97 (100 mg, 0.41 mmol) in dichloromethane was added iodoacetamide-NHS ester (103) (115 mg, 0.41 mmol) and the mixture was stirred at an ambient temperature. After 30 min, the mixture was aspirated onto a 1 mm chromototron plate and eluted with ethyl acetate in hexanes (1:1). A single band was collected and the structure was confirmed: 1H-NMR (400 MHz, CDCl3) δ 6.70 (d, J=7.8 Hz, 1H), 6.27 (d, J=7.0 Hz, 1H), 4.45 (m, 1H), 4.26 (dd, J=8.6, 6.3 Hz, 1H), 3.72 (quart, J=11.3 Hz, 2H), 2.13 (sept, J=6.5 Hz, 1H), 1.47 (s, 9H), 1.38 (d, J=7.1 Hz, 3H), 0.99 (m, 6H); MS (ES+) m/z 412.87 [M+H]+.

1. washeluted with ethyl acetate in hexanes (1:1)
2. customA single band was collected