Chloro/bromotrimethylsilane-Cu(NO 3 ) 2 ·3H 2 O: Safe and efficient reagent system for the decarboxylative ipso -nitration and dibromination of cinnamic acids
作者:Sahar Roshandel、Laxman Gurung、Thomas Mathew、G.K. Surya Prakash
DOI:10.1016/j.tetlet.2017.06.017
日期:2017.7
synthetic potential of halotrimethylsilane-nitrate salt mixture is revealed. A mixture of TMSX-Cu(NO3)2·3H2O system is found to be an efficient reagent system for both the decarboxylative nitration (ipso-nitration) when X = Cl, and dibromination of cinnamic acids, with X = Br, under mild conditions. The reactions are safe and simple, affording the corresponding products (E)-β-nitrostyrenes, and anti-2,3
揭示了卤代三甲基硅烷-硝酸盐混合物的进一步合成潜力。TMSX-Cu构成(NO的混合物3)2 ·3H 2 O系统被发现是两者的脱羧硝化的有效试剂系统(本位-nitration)当X = Cl和的肉桂酸,与X = Br的二溴化,在温和的条件下。该反应是安全且简单的,可以在相对较短的时间内以高收率高产率获得相应的产物(E)-β-硝基苯乙烯和抗-2,3-二溴-3-苯基丙酸。可以避免使用有害和有毒的硝化系统,例如硝酸硝酸乙酰酯和溴化剂,例如分子溴。