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• 98-59-9 p-toluenesulfonyl chloride 
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Relevant academic research and scientific papers

Inter- and intramolecular radical couplings of ene-ynes or halo-alkenes promoted by an InCl3/MeONa/Ph2SiH2 system

(Chemical Equation Presented) An effective generation of indium hydride (HInCl2) under nonacidic conditions is achieved by transmetalation between Ph2SiH2 and InCl2OMe. The presented system achieves the titled coupling reactions in a radical manner. In particular, the nonacidic character enables the applications to acid-sensitive inter- and intramolecular ene-yne couplings.

Ruthenium(II)-catalysed cycloisomerisation of 1,6-dienes by focused microwave dielectric heating: Improved rates and selectivities leading to exo-methylenecyclopentanes

We herein report the effect of microwave dielectric heating in the Ru-catalysed cycloisomerisation of 1,6-dienes. Substantially improved reaction rates are attained for a series of 1,6-diene substrates, with equivalent or higher isomeric purity than conve

Palladium-catalyzed cyclizatlons of 1,6-dienes in the presence of Lewis acids

Palladium-catalyzed cyclizations of several 1,6-dienes were accomplished by utilizing a catalytic amount of additives. Use of Lewis acids gave the endocyclic compounds, while use of silver(I) salts gave the exocyclic compounds.

Cationic NHC-Pd (NHC = N-heterocyclic carbene) complex-catalyzed cycloisomerization of dienes

A variety of [(NHC)Pd(η3-allyl)]Cl (NHC = N-heterocyclic carbene) involving different allyl groups and NHC ligands were synthesized and employed for the cycloisomerization of 1,6-dienes to form cyclic compounds selectively.

Unexpected formation of nitroso-chelated cyclic η1-acylruthenium(II) complex, an effective catalysts for transfer hydrogenation reaction

Reaction of commercial ruthenium complexes M31 and M20 with 2-nitrostyrene gave a new nitroso-chelated cyclic η1-acyl ruthenium(II) complexes Ru-4 and Ru-6 respectively instead of expected Hoveyda-Grubbs type (pre)catalyst Ru-3. New complexes w

Cycloisomerisation of 1,6-dienes in the presence of cationic palladium catalysts

Mono- and dicationic palladium efficiently catalyses the cycloisomerisation of bis allyl substrates with high chemo-, regio- and enantioselectivities (60% ee).

A Free Radical Cyclization Catalyzed by Ruthenium Hydride Species

A photolytically generated ruthenium hydride species catalyzing a free radical cyclization reaction was developed. As the new methodology ensures reproducibility of the free radical reaction of trialkyltin hydrides and a fast hydrogen transfer to the radical intermediates, the methodology provides fast quenching of radical intermediates and thus suppresses rearrangement of radical intermediates before the hydride quench. By offering new reactivity and selectivity to the trialkyltin hydride mediated free radical cyclization reactions, the methodology will find wide range of applications in organic synthesis.

Ammonium NHC-tagged olefin metathesis catalysts-influence of counter-ions on catalytic activity

Ruthenium-based catalysts bearing quaternary ammonium groups in their N-heterocyclic carbene (NHC) fragments and different counter-ions were synthesised and tested in various olefin metathesis transformations. Differences in catalytic activity in correlation with the nature of the present counter-ion were revealed. The unique properties of the described catalysts allow for the effective preparation of a variety of metathesis products with low ruthenium contamination and under green chemistry conditions.

Reductive Cyclization of 1,6- and 1,7-Enynes Catalyzed by Iron Complexes

Iron-catalyzed reductive cyclization of 1,6- and 1,7-enynes was demonstrated by using an oxazoline iminopyridine ligand. Alcohol, ketone, ester, ether, halide, amine, amide, imine, nitrile, silyl, and alkyne groups are tolerated under the mild reaction co

Nitro-Grela-type complexes containing iodides -robust and selective catalysts for olefin metathesis under challenging conditions

Iodide-containing nitro-Grela-type catalysts have been synthesized and applied to ring closing metathesis (RCM) and cross metathesis (CM) reactions. These new catalysts have exhibited improved efficiency in the transformation of sterically, nondemanding a