描述了在室温下或在MW辐射下在无溶剂条件下通过KF / Al 2 O 3促进硫醇共轭加成到柠檬醛中的通用,清洁和简便的方法。已发现相同的方案适用于苯酚与柠檬草精油(Cymbopogon citratus)的直接反应,以直接提供潜在的杀菌剂3-thiophenylcitronellal。该方法扩展到其他贫电子烯烃,效果极佳。该催化系统最多可重复使用三遍,而无需经过之前的处理并具有可比的活性。
Atom-Economic Synthesis of Functionalized Octahydroacridines from Citronellal or 3-(Phenylthio)-citronellal
作者:Raquel G. Jacob、Márcio S. Silva、Samuel R. Mendes、Elton L. Borges、Eder J. Lenardão、Gelson Perin
DOI:10.1080/00397910802663469
日期:2009.7.7
Here we present a simple, solvent-free, one-pot, hetero-Diels-Alder reaction of (R)-citronellal or 3-(phenylthio)-citronellal with arylamines using solid-supported catalyst (SiO2/ZnCl2). This general, efficient, and improved method is selective, affording preferentially new trans-fused 3-(phenylthio)-octahydroacridines (S-OHAs) in good yields. The use of microwave irradiation facilitates the procedure and accelerates the reaction.
Solvent-free conjugated addition of thiols to citral using KF/alumina: preparation of 3-thioorganylcitronellals, potential antimicrobial agents
作者:Eder J. Lenardão、Patrícia C. Ferreira、Raquel G. Jacob、Gelson Perin、Fábio P.L. Leite
DOI:10.1016/j.tetlet.2007.07.103
日期:2007.9
A general, clean and easy method for the conjugatedaddition of thiols to citral promoted by KF/Al2O3 under solvent-free conditions at room temperature or under MW irradiation is described. It was found that the same protocol is applicable to the direct reaction of thiophenol with essential oil of lemon grass (Cymbopogon citratus) to afford directly 3-thiophenylcitronellal, a potential bactericide
描述了在室温下或在MW辐射下在无溶剂条件下通过KF / Al 2 O 3促进硫醇共轭加成到柠檬醛中的通用,清洁和简便的方法。已发现相同的方案适用于苯酚与柠檬草精油(Cymbopogon citratus)的直接反应,以直接提供潜在的杀菌剂3-thiophenylcitronellal。该方法扩展到其他贫电子烯烃,效果极佳。该催化系统最多可重复使用三遍,而无需经过之前的处理并具有可比的活性。
Conversion of α,β-unsaturated aldehydes and esters into cyclopropanes
作者:Yeong-Ho Chang、David E. Campbell、Harold W. Pinnick