反应详情

To a stirred solution of 0.40 g (1.6 mmol) of methyl 1-(2-tert-butoxy-1-methyl-2-oxoethyl)-1H-1,2,3-triazole-5-carboxylate from step A above in 3 mL of anhydrous 1,4-dioxane was added 2.7 mL (11 mmol) of a 4.0 M hydrogen chloride solution in 1,4-dioxane. The resulting mixture was stirred for 1 h and then evaporated to dryness to afford the title compound as an off-white solid (0.27 g, 87%). LC-MS: m/z (ES) 200 (MH)+.

1. customevaporated to dryness