Redox-photosensitized reactions. 11. Ru(bpy)32+-photosensitized reactions of 1-benzyl-1,4-dihydronicotinamide with aryl-substituted enones, derivatives of methyl cinnamate, and substituted cinnamonitriles: electron-transfer mechanism and structure-reactivity relationships
A stereoselective synthesis of cis-alkenenitriles through reformatsky-peterson reaction.
作者:Claudio Palomo、Jesus M. Aizpurua、Natalia Aurrekoetxea
DOI:10.1016/0040-4039(90)80110-8
日期:1990.1
A new procedure for the preparation of alkenenitriles from trimethylsilylchloroacetonitrile and carbonyl compounds promoted by zinc is described.
描述了一种由三甲基甲硅烷基氯乙腈和锌促进的羰基化合物制备链烯腈的新方法。
Semiconductor Photocatalysis: Reaction Mechanisms for the Photoreductive<i>cis</i>–<i>trans</i>Isomerization of Electron-Deficient Alkenes Catalyzed by CdS Powder
of the intermediary radical anions from the alkenes were investigated in order to elucidate the mechanism of this photoisomerization. These results reveal that the CdS-catalyzed cis–transphotoisomerization should proceed through two pathways involving the photoreduction of alkenes: one through the back electron transfer from the radical anion of the alkene (alkene−•) towards the radical cation of TEA
Thiourea-Mediated Stereospecific Deoxygenation of Cyanoepoxides to Access Highly Diastereopure Alkenyl Nitriles
作者:Yujie Zhang、Shukui Shi、Zhanhui Yang
DOI:10.1021/acs.joc.3c02869
日期:2024.2.16
A practical and efficient protocol for synthesis of >99% diastereopure Z- and E-alkenyl nitriles is developed, through tetramethylthiourea-mediated stereospecificdeoxygenation of respective cis- and trans-cyanoepoxides in ethanol. The desired products are obtained in excellent yields.
2-isoxazolines from arylcyclopropanes: I. Monoarylcyclopropanes in a reaction with nitrosyl chloride activated by sulfur(IV) oxide
作者:O. B. Bondarenko、A. Yu. Gavrilova、M. A. Kazantseva、V. N. Tikhanushkina、E. E. Nifant’ev、L. G. Saginova、N. V. Zyk
DOI:10.1134/s1070428002120163
日期:2006.2
A reaction of monoarylcyclopropanes with nitrosyl chloride activated by sulfur (IV) oxide gave in good yields 5-arylisoxazolines. The reaction is of electrophilic character. A scheme of the reaction was suggested.
4,5-dihydroisoxazoles from arylcyclopropanes: II. Reaction of arylcyclopropanes with nitrosyl chloride activated by sulfur(VI) oxide
作者:O. B. Bondarenko、A. Yu. Gavrilova、M. A. Kazantseva、V. N. Tikhanushkina、E. E. Nifant’ev、L. G. Saginova、N. V. Zyk
DOI:10.1134/s1070428007040136
日期:2007.4
Arylcyclopropanes react with nitrosyl chloride activated by sulfur(VI) oxide to give the corresponding 5-aryl-4,5-dihydro-1,2-oxazoles in quantitative yields. The complex NOC1 center dot 2SO(3) is a highly efficient nitrosating agent which makes it possible to involve in the process arylcyclopropanes having both donor and acceptor substituents in the aromatic ring.