反应详情

A solution of 5 gm of the compound from Step C, 50 mL of 2-methyl THF 5 mL, triethanolamine and 2.5 mL of trimethyl silyl azide was heated at 50° C. until reaction completion. When the reaction was judged complete, the reaction mixture was cooled and 50 mL of 1 N sodium hydroxide added, The layers were separated and the organic layer washed with 50 mL of 10% citric acid. The organic layer was concentrated and triturated with hexane to yield 4.6 of the desired compound. 85% yield. 1H NMR (400 MHz, CDCl3) 7.84 (s, 2H), 7.74 (m, 3H), 4.90 (s, 4H)C, H, N, Calculated, (found) 42.92 (42.98), 2.20 (1.97), 13.90 (13.54)

1. temperaturethe reaction mixture was cooled
2. customThe layers were separated
3. washthe organic layer washed with 50 mL of 10% citric acid
4. concentrationThe organic layer was concentrated
5. customtriturated with hexane