2-Fluoro-4-iodoaniline → 4-[6-(2-Fluoro-4-iodo-phenylamino)-5-methyl-pyrimidin-4-yloxy]-piperidine-1-carboxylic Acid Isopropyl Ester

関与物質

反応条件

反応手順

A mixture of 4-(6-chloro-5-methyl-pyrimidin-4-yloxy)-piperidine-1-carboxylic acid isopropyl ester (2.58 g, 8.22 mmol), palladium acetate (185 mg, 0.82 mmol), biphenyl-3-yl-di-tert-butyl-phosphane (25 mg, 0.08 mmol), sodium tert-butoxide (2.4 g, 21.2 mmol), and 4-iodo-2-fluoro aniline (2.0 g, 8.4 mmol) in 15 mL dioxane was heated in microwave for 1 hour at 120° C. Solids were filtered off and mixture was purified by column chromatography and precipitating out of hexane/AcOEt to give compound A77 as a tanned solid (1.99 g, 47%). 1H NMR (CDCl3, 400 MHz) δ 1.15-1.16 (d, 6H), 1.61-1.71 (m, 2H), 1.85-1.90 (m, 2H), 1.99 (s, 3H), 3.27-3.33 (m, 2H), 3.63-3.66 (m, 2H), 4.82-4.85 (m, 1H), 5.20-5.23 (m, 1H), 6.35-6.36 (d, 1H), 7.33-7.36 (m, 2H), 8.08-8.13 (m, 1H), 8.22 (s, 1H). Exact mass calculated for C20H24F1N4O3 514.09, found 515.2 (MH+).

情報源と証拠