反应详情

Compound 6 (1.1 g, 3.8 mmol, 1.0 eq) was stirred in 4M HCl in Dioxane (19 mL) at rt overnight. The reaction mixture was concentrated in vacuo to give 720 mg (100%) of the title compound as an orange solid: 1H NMR (400 MHz, DMSO-d6) 9.13 (s, 1H), 8.86 (s, 2H), 8.04 (s, 1H), 7.89 (s, 1H), 7.38-7.13 (m, 3H); ES-MS [M+1]+: 189.1

1. concentrationThe reaction mixture was concentrated in vacuo