38276-69-6Relevant academic research and scientific papers
Polymeric β-alanine incarcerated Pd(ii) catalyzed allylic etherification in water: A mild and efficient method for the formation of C(sp3)-O bonds
Halder, Mita,Islam, Md. Mominul,Ahammed, Sabir,Islam, Sk. Manirul
, p. 8282 - 8289 (2016/02/09)
A new heterogeneous palladium(ii) catalyst has been developed through a convenient and economic way. The catalyst was synthesized by confining palladium metal with a polystyrenal β-alanine-imine network and characterized by FT-IR spectroscopy, thermogravimetric analysis, field emission scanning electron microscopy, energy dispersive X-ray, and elemental analysis. Polymeric imine can be prepared easily from chloromethylated polystyrene and β-alanine. Using this polymer incarcerated palladium(ii) catalyst a useful and efficient procedure for stereospecific synthesis of allyl-aryl ethers has been developed. The benzylic, aromatic, and heteroaromatic phenols react with various substituted allyl acetates by this procedure to furnish a library of allyl-aryl and allyl-hetero-aryl ethers in high yields. The catalyst could be recovered easily and reused five times without any considerable loss of its catalytic activity.
An efficient palladium-catalyzed synthesis of cinnamyl ethers from aromatic halides, phenols, and allylic chloride
Wang, Wei,Zhou, Rong,Jiang, Zhi-Jie,Wang, Kun,Fu, Hai-Yan,Zheng, Xue-Li,Chen, Hua,Li, Rui-Xiang
, p. 616 - 622 (2014/05/20)
A one-pot, two-step catalytic protocol for the preparation of cinnamyl ethers from simple and readily available aryl halides, phenols and allyl chloride is reported for the first time. This simple and highly efficient palladium nanoparticles catalytic system shows good regio- and stereoselectivities and affords the desired products in good to high yields (49-85%) from aryl iodides. Furthermore, less reactive aryl bromides can also give the cinnamyl ethers in moderate yields (24-72%).
Organic synthesis via magnetic attraction: Benign and sustainable protocols using magnetic nanoferrites
Nasir Baig,Varma, Rajender S.
, p. 398 - 417 (2013/03/14)
Magnetic nano-catalysts have been prepared using simple modification of iron ferrites. The nm size range of these particles facilitates the catalysis process, as an increased surface area is available for the reaction; the easy separation of the catalysts by an external magnet and their recovery and reuse are additional beneficial attributes. Glutathione bearing nano-ferrites have been used as organocatalysts for the Paal-Knorr reaction and homocoupling of boronic acids. Nanoferrites, post-synthetically modified by ligands, were used to immobilize nanometals (Cu, Pd, Ru, etc.) which enabled the development of efficient, sustainable and green procedures for azide-alkynes-cycloaddition (AAC) reactions, C-S coupling, O-allylation of phenol, Heck-type reactions and hydration of nitriles.
O-Allylation of phenols with allylic acetates in aqueous media using a magnetically separable catalytic system
Saha, Amit,Leazer, John,Varma, Rajender S.
supporting information; experimental part, p. 67 - 71 (2012/03/27)
Allylic ethers were synthesized in water using magnetically recoverable heterogeneous Pd catalyst via O-allylation of phenols with allylic acetates under ambient conditions. The aqueous reaction medium, easy recovery of the catasyst using an external magn
