为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

Promoted by SmI3 β-diketones, β-ketoesters and α–cyano esters were added to α,β–unsaturated esters to form δ–ca......

An efficient conversion of β-diketones into correspondingβ-keto enol ethers with catalytic amount of PMA-SiO_2 has bee......

以咔唑和联苯为原料合成了2个含咔唑基团的新型β-二酮,并用1H NMR、13C NMR、MS、元素分析、热分析、紫外可见吸收光谱及荧光光谱......