化学合成。
化学合成
合成路线 1(1. 合成:862723-42-0)
产率:84%
合成条件:With potassium acetate In N,N-dimethyl-formamide at 90℃; for 24 h;
实验步骤:例9; 545-r(iiS.5iS)-6-甲基-3,6-二氮杂(^ clor3.2.01庚-3-基]吡啶-3-呋喃 - 吲唑双三氟乙酸酯实施例9A 5 - (“4.4.5.5-四甲基-1,3.2- 在Pd(dppf)的催化下,将二氧杂硼杂环戊烷-2-基V1H-吲唑-5-溴-1H-吲唑(US2003199511,9.45g,48mmol)与双(频哪醇合)二硼(Combi-Blocks,15.5g,61mmol)偶联。 在KOAc(Aldrich,16.7g,170mmol)的无水DMF(160ml)存在下,在90℃下,2Cl2 *Cη2Cl2(Aldrich,985mg,1.2mmol)24小时。反应完成后,将其冷却至环境温度 温度,用EtOAc(250mL)稀释,用水(2×50mL)洗涤,减压浓缩有机相,用色谱法(SiO 2,己烷:EtOAc(v.10:1))纯化残余物, Rf = 0.6),得到标题化合物(9.8g,收率,84%)。1H NMR(300MHz,CD3OD)δppm1.36(s,12H)7.51(dt,J = 8.5,1.0Hz,1H) )7.73(dd,J = 8.5,1.0 Hz,1 H)8.08(d,J = 1.0 Hz,1 H)8.23(t,J = 1.0 Hz,1 H); MS(DCI / NH3)m / z 245 (M + 1)+。
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