Реакция #51652

Уравнение реакции

4-acetamidophenol

(4-methoxycarbonylphenyl)boronic acid

→

methyl 4-(4-acetamidophenoxy)benzoate

Выход 75.1%

Растворители

CH2Cl2

Условия реакции

Обработка

1. 1
   ДругоеDry air
2. 2
   Другоеfor 16 hours
3. 3
   Другоеat room temperature
4. 4
   КонцентрированиеThe resulting material is concentrated
5. 5
   Другоеpurified by flash column chromatography (25-50% EtOAc in heptane)

Методика

Dry air is bubbled through a solution of 4-acetamidophenol (320 mg, 2.1 mmol), copper(II) acetate (384 mg, 2.1 mmol), TEA (1.5 mL, 10.5 mol), (4-methoxycarbonylphenyl)boronic acid (760 mg, 4.2 mmol), and powdered molecular sieves (2 g) in CH2Cl2 (21 mL) for 16 hours at room temperature. The resulting material is concentrated and purified by flash column chromatography (25-50% EtOAc in heptane) to give methyl 4-(4-acetamidophenoxy)benzoate (450 mg, 75%). 1H NMR (300 MHz, DMSO) δ 8.01, 7.54, 7.27, 7.05, 6.98, 3.92, 2.22.

Источник