反应 #171552

反应方程式

78

tert-Butyl 2-methoxyethyl(2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)ethyl)carbamate

7-(2-fluoro-4-nitrophenoxy)-2-iodothieno[3,2-b]pyridine

Na2CO3

→

tert-Butyl 2-(4-(7-(2-fluoro-4-nitrophenoxy)thieno[3,2-b]pyridin-2-yl)-1H-pyrazol-1-yl)ethyl(2-methoxyethyl)carbamate

溶剂

DME

DCM

反应条件

后处理

1. 1
   温度was heated
2. 2
   温度to reflux overnight under nitrogen
3. 3
   洗涤washed with water
4. 4
   干燥dried over anhydrous sodium sulphate
5. 5
   浓缩concentrated under reduced pressure
6. 6
   其他The residue was purified by flash chromatography, eluents EOAc/Hex 1:1, EtOAc, 5% MeOH in DCM affording title compound 79 (203 mg, 39%) as brown syrup

实验过程

A mixture of 78 (369.3 mg, 0.93 mmol), 7-(2-fluoro-4-nitrophenoxy)-2-iodothieno[3,2-b]pyridine (24) [US 2006/0287343 A1](466.6 mg, 1.12 mmol), Pd(PPh3)4 (54 mg, 0.05 mmol) and Na2CO3 (305 mg, 2.8 mmol) in DME (1.9 mL) was heated to reflux overnight under nitrogen. It was then diluted with DCM, washed with water, dried over anhydrous sodium sulphate and concentrated under reduced pressure. The residue was purified by flash chromatography, eluents EOAc/Hex 1:1, EtOAc, 5% MeOH in DCM affording title compound 79 (203 mg, 39%) as brown syrup. MS (m/z): 558.2 (100%) (M+H).

来源