Results 31 to 40 of about 2,480,939 (303)
Aza-Michael mono-addition using acidic alumina under solventless conditions [PDF]
, 2016 Aza-Michael reactions between primary aliphatic and aromatic amines and various Michael acceptors have been performed under environmentally-friendly solventless conditions using acidic alumina as a heterogeneous catalyst to selectively obtain the ...
Abdilla, Roderick, Bosica, Giovanna
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Simple one pot preparation of chemical hydrogels from cellulose dissolved in cold LiOH/urea [PDF]
, 2020 In this work, non-derivatized cellulose pulp was dissolved in a cold alkali solution (LiOH/urea) and chemically cross-linked with methylenebisacrylamide (MBA) to form a robust hydrogel with superior water absorption properties.
Lindman, Björn +3 more
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Dual-functional materials via CCTP and selective orthogonal thiol-Michael addition/epoxide ring opening reactions [PDF]
, 2013 Poly(glycidyl methacrylate) (PGMA) has been synthesised by cobalt catalysed chain transfer polymerisation (CCTP) yielding, in one step, polymers with two points for post polymerisation functionalisation; the activated terminal vinyl bond and in chain ...
Haddleton, David M. +3 more
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Enantioselective Michael Addition of Water [PDF]
Chemistry – A European Journal, 2014 AbstractThe enantioselective Michael addition using water as both nucleophile and solvent has to date proved beyond the ability of synthetic chemists. Herein, the direct, enantioselective Michael addition of water in water to prepare important β‐hydroxy carbonyl compounds using whole cells of Rhodococcus strains is described.
Chen, B.S. (author) +3 more
openaire +4 more sources
6-exo-trig Michael addition-lactonizations for catalytic enantioselective chromenone synthesis [PDF]
, 2017 The authors thank the EPSRC Centre for Doctoral Training in Critical Resource Catalysis (CRITICAT, grant code EP/L016419/1, RMNP) for funding.The European Research Council under the European Union’s Seventh Framework Programme (FP7/2007-2013) ERC Grant ...
Cordes, David Bradford +3 more
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Beilstein Journal of Organic Chemistry, 2013 Regioselective conjugate 1,4-trifluoromethylation of α,β-unsaturated ketones by the use of shelf-stable electrophilic trifluoromethylating reagents, S-(trifluoromethyl)diphenylsulfonium salts and copper under mild conditions is described. A wide range of
Satoshi Okusu +3 more
doaj +1 more source
Biosensors, 2022 Benzimidazole-based compound 2-(p-tolyl)-1H-benzo[d]imidazole (3) and its derivative probe A-B have been synthesized for the highly selective detection and quantification of Cys in human serum.
In-ho Song +3 more
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Recent Advances in Asymmetric Organocatalyzed Conjugate Additions to Nitroalkenes
Molecules, 2017 The asymmetric conjugate addition of carbon and heteroatom nucleophiles to nitroalkenes is a very interesting tool for the construction of highly functionalized synthetic building blocks.
Diego A. Alonso +6 more
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A stereoselective synthesis of (R)-(-)-rolipram from L-glutamic acid [PDF]
, 1997 A stereoselective synthesis of (R)-(-)-rolipram from L-glutamic acid is described. The key step is a stereoselective Michael addition of an arylcuprate to a modified pyroglutamic derivative which acts as the template to induce the stereoselectivity ...
Díaz Martínez, Adolfo +4 more
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Molecules, 2018 Primary amine-salicylamides derived from chiral trans-cyclohexane-1,2-diamines are used as organocatalysts for the enantioselective conjugate addition of α,α-disubstituted aldehydes to arylated and heteroarylated nitroalkenes.
José R. Martínez-Guillén +4 more
doaj +1 more source