The reaction of aryldiazoacetates with enamines catalyzed by copper and rhodium complexes provided γ-ketoesters in good yields.
芳基重氮化合物在铜盐催化下与烯胺反应,并不产生预期的氨基环丙烷产物,而高产γ-酮酯。
Methyl 3-oxo pentanoate as the reactant,some β-keto esters can be prepared by gas chromatography.
以3-氧代戊酸甲酯为反应物,在气相色谱上在线制备了一些β-二酮酯类化合物,用HP-5色谱柱分离了烯醇式和酮式互变体,并讨论了3-氧代戊酸酯化合物"纯"的烯醇式和酮式互变体的质谱图断裂机理。
The Henry reaction of cyclic α-ketoesters and α-ketoamides was achieved using triethylamine as a promoter.
用三乙胺催化环状α-酮酯和α-酮酰胺同硝基甲烷的Henry反应,首次合成了12个多官能团的β-硝基醇,它们的结构用元素分析、红外光谱和核磁共振进行了表征。
The recent advancement of the asymmetric addition of organozinc reagents to ketones and α-ketoesters is reviewed according to the type of the chiral ligands, with an emphasis on the introduction of the ligands with high efficiency and high selectivity.
按照手性配体的结构类型分类,综述了近年来有机锌试剂对酮、α-酮酯等化合物的不对称加成反应的研究进展,对高效、高选择性的手性配体在该类反应中的应用进行了重点评述。
Effects of extract of Ginkgo Biloba leaves(EGb50) on protein expression of nerve growth factor after sciatic nerve injury in rats;
银杏酮酯对大鼠坐骨神经损伤后神经生长因子蛋白表达的影响
Effect of Extract of Ginkgo Biloba leaves(EGb50)on mRNA expression of NGF after sciatic nerve injury in rats;
银杏酮酯对大鼠坐骨神经损伤后神经生长因子基因表达的影响
Effect of extract of Ginkgo Biloba leaves on sciatic nerve regeneration in rats;
银杏酮酯促进大鼠坐骨神经再生的实验研究
