Electric Literature of 60758-86-3, In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 60758-86-3 as follows.
The reaction flask was charged with 400 mL of tetrahydrofuran and 62.5 g (0.8 mol) of dimethylsulfoxide,Stirring down to 0 to 5 ,500 mL (0.8 mol) of 1.6 M n-butyllithium n-hexane solution at a temperature of 0 C to 5 C was added,Stirring reaction for 1.5 hours,179.0 g (0.55 mol) of tributyltin chloride and 88.6 g (0.5 mol) of 3-ethoxy-4-methoxybenzonitrile (formula III) in 450 mL of tetrahydrofuran were added,Stirring for 0.5 hours,The temperature was raised to 15 C to 20 C for 2 hours,1000 mL of purified water was added,The incubation was continued at 15 C to 20 C for 12 hours.Stop the reaction,The solid obtained in the reaction solution was filtered, washed with purified water,N-hexane, tetrahydrofuran 100mL each washing cake.Dried to afford 109.6 g of a white solid,The molar yield was 85.2%, HPLC purity was 98.1% and ee was 97.3%.
According to the analysis of related databases, 60758-86-3, the application of this compound in the production field has become more and more popular.
Reference:
Patent; Peking University Fangzheng Group Co., Ltd.; Chongqing Southwest Synthetic Pharmaceutical Co., Ltd.; Peking University Medical Treatment Industrial Group Co., Ltd.; Fu Biao; Wang Fenglin; Luo Li; (9 pag.)CN106866493; (2017); A;,
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