Nitroalkanes and ethyl glyoxalate as common precursors for the preparation of both β-keto esters and α,β-unsaturated esters
作者:Roberto Ballini、Dennis Fiorini、Alessandro Palmieri
DOI:10.1016/j.tetlet.2004.07.141
日期:2004.9
acrylic esters, obtained by the reaction of nitroalkanes and ethyl glyoxalate, are the key building blocks for the immediate synthesis of both the title compounds. In fact, their treatment with titanium trichloride produce the direct conversion to the β-keto esters, while their reaction with sodium boron hydride gives the one-pot synthesis of α,β-unsaturated esters through formal substitution of the
通过硝基烷烃和乙二醛酸乙酯的反应获得的β-硝基丙烯酸酯是两种标题化合物立即合成的关键组成部分。实际上,它们用三氯化钛处理可直接转化为β-酮酯,而它们与氢化硼钠的反应是通过用氢正式取代乙烯基硝基而一锅合成α,β-不饱和酯。