反应详情

(1-Benzyl-1H-indazol-5-yl)-(6-(5-(1,3)-dioxolan-2-yl-furan-2-yl)-quinazolin-4-yl)-amine (2.0 g) and hydrochloric acid (2N, 50 ml) were stirred in THF (20 ml) for 16 hr. The resulting precipitate was filtered, washed with water and dried at 60° C. in vacuo to give the product as a yellow solid (1.80 g, 3.73 g, 91%); δH [2H6]-DMSO 12.30 (1H, s), 9.79 (1H, s), 9.62 (1H, s), 8.85 (1H, s), 8.62 (1H, m), 8.31 (1H, s), 8.19 (1H, m), 8.10 (1H, d), 7.90 (2H, m), 7.78 (2H, m), 7.40 (5H, m), 5.80 (2H, s).

1. filtrationThe resulting precipitate was filtered
2. washwashed with water
3. customdried at 60° C. in vacuo