반응 #1586933

반응 방정식

tert-butyl 3-{3-[1-(4-amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethyl]-5-chloro-6-fluoro-2-methoxyphenyl}azetidine-1-carboxylate

4,4,5,5-tetramethyl-2-vinyl-1,3,2-dioxaborolane

sodium carbonate

→

desired product

수율 74.3%

tert-Butyl 3-{3-[1-(4-amino-3-vinyl-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethyl]-5-chloro-6-fluoro-2-methoxyphenyl}azetidine-1-carboxylate

수율 74.3%

용매

N,N-dimethylformamide

water

water

반응 조건

후처리

1. 1
   온도After cooling to room temperature
2. 2
   추출extracted with EtOAc
3. 3
   농축The combined organic layers were concentrated
4. 4
   기타purified on silica gel (eluting with 0 to 100% EtOAc in hexanes followed by 0 to 10% MeOH in dichloromethane)

실험 절차

To a solution of tert-butyl 3-{3-[1-(4-amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethyl]-5-chloro-6-fluoro-2-methoxyphenyl}azetidine-1-carboxylate (0.55 g, 0.91 mmol), 4,4,5,5-tetramethyl-2-vinyl-1,3,2-dioxaborolane (0.281 g, 1.82 mmol), sodium carbonate (0.580 g, 5.47 mmol) in N,N-dimethylformamide (5 mL)/water (2.73 mL) under N2 was added tetrakis(triphenylphosphine)-palladium(0) (0.105 g, 0.0910 mmol). The mixture was heated at 100° C. overnight. After cooling to room temperature, the mixture was diluted with water, and extracted with EtOAc. The combined organic layers were concentrated and purified on silica gel (eluting with 0 to 100% EtOAc in hexanes followed by 0 to 10% MeOH in dichloromethane) to give the desired product (0.34 g, 74%). LCMS calculated for C24H29ClFN6O3 (M+H)+: m/z=503.2; Found: 503.1.

출처