反应详情

A mixture of 1-benzyl 4-tert-butyl (2S)-2-{benzyl[2-(chloromethyl)prop-2-en-1-yl]amino}succinate from step 1b (8.7 g) and NaI (8.0 g) in acetone (100 mL) was stirred at RT overnight. The solid was filtered off and the filtrate concentrated. The residue was treated with methylene chloride and filtered through a pad of silica gel to give 1-benzyl 4-tert-butyl (2S)-2-{benzyl[2-(iodomethyl)prop-2-en-1-yl]amino}succinate (9.2 g). MS (ESI): 550.2 (M+H+).

1. filtrationThe solid was filtered off
2. concentrationthe filtrate concentrated
3. additionThe residue was treated with methylene chloride
4. filtrationfiltered through a pad of silica gel