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Efficient Direct 2,2,2-Trifluoroethylation of Indoles via C-H Functionalization, Gergely László Tolnai, Anna Székely, Zita Makó, Tamás Gáti, János Daru, Tamás Bihari, Andras Stirling and Zoltán Novák, Chem. Commun. 2015, DOI: 10.1039/C5CC00519A

A novel highly C3 selective metal free trifluoroethylation of indoles using 2,2,2-trifuoroethyl(mesityl)-iodonium triflate was developed. The methodology enables the introduction of a trifluoroethyl group in a fast and efficient reaction under mild conditions with high functional group tolerance. Beyond the synthetic developments, quantum chemical calculations provide a deeper understanding of the transformation.

zng pub 44

Copper-Catalyzed Oxidative Ring Closure of ortho-Cyanoanilides with Hypervalent Iodonium Salts: Arylation–Ring Closure Approach to Iminobenzoxazines, Klára Aradi, Zoltán Novák, Adv. Synt. Catal. 2015357, 371-376. DOI: 10.1002/adsc.201400763

A novel, highly modular synthetic methodology with high functional group tolerance was developed for the construction of iminobenzoxazine derivatives from ortho-cyanoanilides and diaryliodonium triflates via an oxidative arylation–cyclization path. The reaction is supposed to involve the formation of highly active aryl-copper(III) species. In this novel transformation, copper(II) triflate was used as catalyst in 1,2-dichloroethane or ethyl acetate and the reaction takes place at 75 °C in 2–16 h.

zng pub 43

Synthesis and Transformations of Oxygen Heterocycles, Zoltán Novák, András Kotschy. Topics in Heterocyclic Chemistry 2014. DOI: 10.1007/7081_2014_136

The recent developments in the transition metal-catalyzed synthesis and transformations of such oxygen-containing heteroaromatic systems are reviewed, where the oxygen is part of a five-membered ring.

zng pub 42

 

Tuesday, 02 December 2014 13:46

Fruzsi received PhD. degree

Fruzsi successfully defended her PhD thesis. Congratulations!

The Conference of Scientific Students’ Associations (TDK) was organized this year too at ELTE. Considering the points of thesis and the presentation Márton Zwillinger performed in the first place and Dániel Lasányi received the third prize. Congratulations to them!
The next challenge will come at the National Conference of Scientific Students’ Associations (OTDK) in Veszprém (2015 april 9-11).

Wednesday, 01 October 2014 00:00

A new paper has been released in Chem. Eur. J.

A new mechanistic study was published in Chem. Eur. J. about Silver-Mediated Furan Formation by Oxidative Coupling.

Monday, 01 September 2014 00:00

A new paper has been released in RSC Advances

A new paper has been released in topic of continuous-flow chemistry: Azide–alkyne cycloadditions with an effective bimetallic catalyst and a simple scavenger system.

Sunday, 01 June 2014 00:00

Our latest results in Organic Letters

Org. Lett. released our new results in Copper-Catalyzed Trifluoromethylation of Aromatic and Heteroaromatic Iodides!

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