Stereoselective synthesis of vinyl nitriles through a Ramberg–Bäcklund approach
作者:Octavio A. Valle-González、Ángel I. Salazar-Bello、J. Armando Luján-Montelongo
DOI:10.1039/d3ob00214d
日期:——
applicability of vinyl nitriles in the preparation of pharmaceuticals, polymers, and other valuable materials benefits from robust preparative methodologies. In this work, we present a novel approach for the synthesis of vinyl nitriles based on the Ramberg–Bäcklund olefination reaction (RBR). While there are few examples for accessing functionalized olefins using the RBR, we believe that this methodology
乙烯基腈在药物、聚合物和其他有价值材料制备中的适用性得益于可靠的制备方法。在这项工作中,我们提出了一种基于 Ramberg–Bäcklund 烯化反应 (RBR) 合成乙烯基腈的新方法。虽然很少有使用 RBR 获得功能化烯烃的例子,但我们相信这种方法体现了安装特权乙烯基腈构建单元的有用方法,例如美国 FDA 批准的抗病毒利匹韦林的丙烯腈片段。
New Protocol for the Synthesis of S‐Thioesters from Benzylic, Allylic and Tertiary Alcohols with Thioacetic Acid
Reaction of activated alcohols with neat thioacetic acid catalyzed by HBF4 provides a convenient entry into thioacetates, protected version of the corresponding thiols; the generation of intermediate acetates and thionoacetates and the mechanism of their further conversion to the final products has been fully rationalized.
Synthesis of Thiols via Palladium Catalyzed Methanolysis of Thioacetates with Borohydride Exchange Resin
作者:Jaesung Choi、Nung Min Yoon
DOI:10.1080/00397919508011812
日期:1995.9
Various thiols are prepared quantitatively from the corresponding thioacetates via Pd catalyzed methanolysis with borohydride exchange resin under a mild and neutral conditions. One-pot synthesis of thiols from alkyl halides through the formation of alkyl thioacetates using thioacetate exchange resin followed by methanolysis is also described.
A new, highly efficient method for the conversion of alcohols to thiolesters and thiols