Phosphine-Free Well-Defined Mn(I) Complex-Catalyzed Synthesis of Amine, Imine, and 2,3-Dihydro-1<i>H</i>-perimidine via Hydrogen Autotransfer or Acceptorless Dehydrogenative Coupling of Amine and Alcohol
report the synthesis of amines/imines directly from alcohol and amines via hydrogen autotransfer or acceptorless dehydrogenation catalyzed by well-defined phosphine-free Mn complexes. Both imines and amines can be obtained from the same set of alcohols and amines using the same catalyst, only by tuning the reaction conditions. The amount and nature of the base are found to be a highly important aspect for
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.
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.
[BTBA]Cl-FeCl<sub>3</sub> as an Efficient Lewis Acid Ionic Liquid for the Synthesis of Perimidine Derivatives
作者:Kiumars Bahrami、Sepideh Saleh
DOI:10.1080/15533174.2014.989602
日期:2016.6.2
An effective synthesis of various biologically important 2,3-dihydroperimidines from reaction of aldehydes and naphthalene-1,8-diamine has been developed using [BTBA]Cl-FeCl3 as an efficient Lewis acid ionicliquid. This method is a very simple and high yielding reaction for the preparation of the titled compounds. Different functional groups are tolerated under this reaction conditions including ether
General synthetic approach towards annelated 3a,6-epoxyisoindoles by tandem acylation/IMDAF reaction of furylazaheterocycles. Scope and limitations
作者:Fedor I. Zubkov、Eugenia V. Nikitina、Timur R. Galeev、Vladimir P. Zaytsev、Victor N. Khrustalev、Roman A. Novikov、Daria N. Orlova、Alexey V. Varlamov
DOI:10.1016/j.tet.2014.01.008
日期:2014.2
investigated. The obtained Diels–Alder adducts are attractive and useful substrates for further transformations. Fused isoindoles can be prepared from them in one-step by aromatization of the 7-oxabicyclo[2.2.1]heptene ring. Other transformations, including halogenation, ring cleavage, and Wagner–Meerwein skeletal rearrangement, are also demonstrated. The spatial structures of the obtained compounds have