Stereoselective synthesis and discovery of novel spirooxindolopyrrolidine engrafted indandione heterocyclic hybrids as antimycobacterial agents
作者:Natarajan Arumugam、Abdulrahman I. Almansour、Raju Suresh Kumar、Vagolu Siva Krishna、Dharmarajan Sriram、Necmi Dege
DOI:10.1016/j.bioorg.2021.104798
日期:2021.5
Novel spirooxindolopyrrolidine embedded indandione heterocyclic hybrids were obtained in excellent yields via a regio- and stereoselective one-pot three component reaction between Baylis-Hillman adduct and non-stabilized azomethine ylides. The structure of newly synthesized compounds was elucidated through 1D and 2D spectroscopic data and the stereochemistry was determined by single crystal X-ray diffraction
Highly Efficient Synthesis of Novel Morita-Baylis-Hillman Adducts from Activated Ketones Using a DABCO-Based Hydroxy Ionic Liquid (HIL) as a Recyclable Catalyst-Solvent
作者:Ali Khalafi-Nezhad、Somayeh Mohammadi
DOI:10.1055/s-0031-1290773
日期:2012.6
A highly efficient non-imidazolium DABCO-based ionic liquid has been prepared for the synthesis of biologically active Morita-Baylis-Hillman adducts from activated ketones. The results show that the ionic liquid is very efficient in the Morita-Baylis-Hillman reaction due to its operational simplicity, high yields, dual catalyst-solvent properties, and excellent recyclability and reusability. This hydroxy ionic liquid acts as a protic solvent and tertiary amine for the preparation of biologically active compounds from isatin, ninhydrin, 1,2-acenaphthylenequinone, and benzil with high yields and very short reaction times.
Inexpensive ionic liquid mediated green synthetic approach of multi-functionalized regioselective β-lactam fused isoxazolidine heterocyclic hybrids
isoxazolidines through a nitrone1,3-dipolarcycloaddition reaction. The low cost and eco-benign room temperature ionic liquid, acetylcholine iodide-ethylene glycol (ACI/EG) accelerates the formation of the desired regioselective mono-/di isoxazolidine analogues and reduced the reaction time with high level of chemical yield. Furthermore, the recyclability of ACI/EG has also been investigated.