A novel catalyst-free, eco-friendly, on water protocol for the synthesis of 2,3-dihydro-1H-perimidines
作者:Nissy Ann Harry、Reeba Mary Cherian、S. Radhika、Gopinathan Anilkumar
DOI:10.1016/j.tetlet.2019.150946
日期:2019.8
The first greenest methodology for the synthesis of 2,3-dihydro-1H-perimidines on water is described. 1,8-Diamino naphthalene was reacted with different types of aldehydes at room temperature to furnish the product in moderate to excellent yields in 30 min. A multi-gram scale reaction is also performed to ensure the scalability of the reaction.
Concise access to perimidines by palladium (II) complexes via acceptorless dehydrogenative coupling of alcohols
作者:Savarimuthu Selvan Clinton、Rengan Ramesh、Jan Grzegorz Małecki
DOI:10.1002/aoc.6708
日期:2022.7
square-planar geometry around Pd(II) ion chelated by azomethine nitrogen and imidolate oxygen of biphenyl benzhydrazone ligands with labile chloride and a triphenylphosphine. Further, the selective synthesis of a broad range of functionalized perimidines has been accomplished via ADC of a variety of alcohols with 1,8-diamino naphthalene. The palladium complexes mediated catalytic synthesis offered good yields of
已经报道了一种通过由新的 Pd(II) 配合物支持的易于开发的苯甲醇的脱氢偶联来一锅合成 2,3-二氢-1 H-哌啶的简便方案。为了完成 perimidine 的构建,已报道了一组新的钯 (II) 配合物 [Pd(L)Cl (PPh 3 )] ( 1-3 ),其中包含联苯苯腙配体 (L=L 1 -L 3 ) 作为催化剂. 通过元素分析、FT-IR、NMR ( 1 H 和13 C) 和质谱分析进行的结构表征证实了合成配合物的组成。分子结构络合物1和络合物2使用单晶 X 射线衍射可以明确分辨。它揭示了该配合物在 Pd(II) 离子周围具有扭曲的方形平面几何形状,该几何形状被联苯苯腙配体的偶氮甲碱氮和亚胺氧螯合与不稳定的氯化物和三苯膦结合。此外,已经通过多种醇与 1,8-二氨基萘的 ADC 实现了范围广泛的官能化哌啶的选择性合成。钯配合物介导的催化合成仅使用 0.5 mol% 的催化剂负载即可提供高达
Novel Recyclable Catalysts for Selective Synthesis of Substituted Perimidines and Aminopyrimidines
作者:Bo Zhang、Jiahao Li、Haiyan Zhu、Xiao-Feng Xia、Dawei Wang
DOI:10.1007/s10562-022-04153-6
日期:——
It was accepted ligands played key role for selectivesynthesis and catalysis. A novel pyridinyltriazine skeleton ligand, the corresponding catalysts SBA-15@TZP-Ir and SBA-15@TZP-Ru were synthesized and fully characterized by modern methods. The resulting catalysts showed high catalytic activity in selectivesynthesis of useful substituted perimidines and aminopyrimidines in high yields. Additionally
A novel catalyst‐free mechanochemical protocol for the synthesis of 2,3‐dihydro‐1<i>H</i>‐perimidines
作者:Nissy Ann Harry、Sankaran Radhika、Mohan Neetha、Gopinathan Anilkumar
DOI:10.1002/jhet.3880
日期:2020.4
A rapid, efficient, and green grinding assisted method for the synthesis of 2,3‐dihydro‐1H‐perimidines has been developed. 1,8‐Diaminonaphthalene and aldehydes were ground using mortar and pestle for 5 minutes affording the product in moderate to excellent yields. The methodology minimises the use of conventional workup and column chromatographic techniques.