反应详情

A mixture of diethyl 4-bromopyridine-2,6-dicarboxylate (8.36 g, 27.7 mmol), 57% (w/w) aqueous hydriodic acid (31.05 g, 138.4 mmol) and EtOH (67 mL) was stirred at 50° C. for 1 h and neutralized with saturated NaHCO3 solution. The product was extracted from the aqueous phase with CH2Cl2 (2×300 mL). The combined organic fractions were dried with Na2SO4 and evaporated to dryness. Yield was 5.24 g (54%). ESI-TOF-MS [M+H]+: calc. for C11H13INO4+ 349.99. found 349.99.

1. extractionThe product was extracted from the aqueous phase with CH2Cl2 (2×300 mL)
2. dry with materialThe combined organic fractions were dried with Na2SO4
3. customevaporated to dryness