Cycloaddition Reactions of
<i>in situ</i>
Generated C
<sub>2</sub>
D
<sub>2</sub>
in Dioxane: Efficient Synthetic Approach to D
<sub>2</sub>
‐Labeled Nitrogen Heterocycles
作者:Vladimir V. Voronin、Maria S. Ledovskaya、Konstantin S. Rodygin、Valentine P. Ananikov
DOI:10.1002/ejoc.202101085
日期:2021.11.8
Efficient synthetic procedures for the preparation of D2-labeled nitrogen heterocycles via cycloaddition reactions of dideuteroacetylene in 1,4-dioxane were developed. The proposed approach is suitable for the synthesis of four classes of D2-labeled heterocycles including triazoles, isoxazoles, pyrazoles and pyridazines.
开发了通过双丁二炔在 1,4-二恶烷中的环加成反应制备 D 2标记的氮杂环的有效合成方法。所提出的方法适用于合成四类 D 2标记的杂环,包括三唑、异恶唑、吡唑和哒嗪。
Synthesis of substituted 1-aralkyl-1H-v-triazoles
申请人:ICI Americas Inc.
公开号:US04227004A1
公开(公告)日:1980-10-07
Substituted 1-aralkyl-1H-v-triazoles are prepared from a suitable 1-aralkyl-1H-v-triazole by a process comprising an alkylation step and dependent on the product desired suitably followed by an oxidation step and decarboxylation step.
Phase-Vanishing Method with Acetylene Evolution and Its Utilization in Several Organic Syntheses
作者:Ryosuke Matake、Yuki Niwa、Hiroshi Matsubara
DOI:10.1021/acs.orglett.5b00827
日期:2015.5.15
A novel quadraphasic phase-vanishing system in which acetylene is evolved from calcium carbide and directly applied in situ to the Sonogashira coupling reaction was developed. This method, which provides a safe, convenient, and one-pot means to utilize gaseous reagents without special equipment, was also applied to a Cu-catalyzed azide-alkyne cycloaddition (CuAAC) reaction and a three-component aldehyde-alkyne-amine (A(3)) coupling reaction with excellent results.