§ Department of Biochemistry, University of Oulu, P.O. Box 3000, 90014 Oulu, Finland ∥ Biocenter Oulu, University of Oulu, P.O. Box 5000, 90014 Oulu, Finland. Article Views are the COUNTER-compliant ...

The gas detection agent used was vanillin, which underwent aldol condensation with nonanal in the presence of a basic catalyst, resulting in the formation of an unsaturated aldehyde. Porous glass was ...

Claisen reaction(克莱森反应)有很多类型，以下列举三种： 含有α-氢的酯在碱作用下进行自身缩合生成β-酮酯，就叫Claisen condensation (克莱森缩合) 含有α-氢的酯在碱作用下与没有α-氢的酯发生缩合生成β-酮酯，被称为crossed (mixed) Claisen condensation(交叉克莱森缩合 ...

Claisen缩合反应（克莱森缩合反应）是指含有α-活泼氢的酯类在醇钠、三苯甲基钠等碱性试剂的作用下，发生缩合反应形成β-酮酸酯类化合物的反应。如2分子乙酸乙酯在金属钠和少量乙醇作用下发生缩合得到乙酰乙酸乙酯。 参与反应的两个酯分子不必相同，但 ...

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IFB-Z10. Unexpectedly, curvulamine results from a consortium of 6 enzymes including a pyridoxal-5′-phosphate (PLP)-dependent bifunctional aminotransferase (CuaB) catalyzing the formation of C−C (via ...

Abstract: In this work we present the application of hydrothermal method for synthesis of vanadium, titanium and mixed vanadium-titanium phosphate catalysts and the results of their testing in aldol ...

This clearly showed that the reaction occurs through the intramolecular mechanism and not the intermolecular mechanism. The authors also reported the use of a crotyloxy group in the aromatic Claisen ...