Jan 1, 2007 · We are interested in coordination chemistry of triflate from the side of cationic ruthenium species. When we consider the dissociation (or solvent-assisted dissociation) of the M–OTf bond, an important factor should be stability of cationic species M +, which may exist as the coordinatively unsaturated form in less-polar solvents: M–OTf ⇆ M + + − OTf.

Sep 9, 2012 · The latter points are clearly related to the functional groups present in α-ketovinyl triflates. Four types of organic transformations are expected and known: (1) the vinyl triflate part could be engaged in coupling reactions; (2) the carbonyl group as well as the enone motif could be subjected to nucleophilic additions; (3) if a proton is available next to the triflate group, …

Jan 1, 1981 · Trimethylsilyl triflate is a powerful silylating agent for organic compounds and acts as a catalyst which accelerates a variety of nucleophilic reactions in aprotic media. The reactions proceed via one-center, electrophilic coordination of the silyl group to hetero functional groups and exhibit unique selectivities.

Sc(OTf) 3 the rare‐earth metal triflate has proven itself as a powerful catalyst, outperforming others in various organic transformations and yielding products of high quality. Recognized as scandium triflate, it serves as a versatile Lewis acid catalyst in organic synthesis, showcasing broad catalytic capabilities.

Oct 1, 2023 · As a part of our work, we report herein a ytterbium(III) triflate coupling of enamides with diethyl acetylene-dicarboxylate (DEAD) to synthesized substituted pyrroles using Trofimov reaction and the mechanism shown in Scheme 2 (Uludag et al., 2018, Uludağ et al., 2014, Tunoglu and Uludag, 1997, Petrova et al., 1997, Zhu et al., 2009), and our ...

May 12, 2000 · The triflate group is one of the best leaving groups available, only the nitrogen molecule in diazonium salts or PhI 3 in iodonium salts being more effective nucleophugs. 1 It is known, for example, that the relative rate of solvolysis of 1-phenylethyl triflate is approximately 3×10 3 times greater than that of the tosylate. 4 Moreover ...

Jun 1, 2024 · In this work, we demonstrate an oxidant-free, scalable, and user-friendly protocol for the direct C(sp 2)-H trifluoromethylation of functionalized arenes using Iron(II) triflate as a robust photocatalyst and bench-stable CF 3 SO 2 Na (1.5 equiv.) as …

Sep 23, 2012 · Indium(III) salts have found widespread application in organic synthesis as highly effective, hydrolytically stable and non-toxic Lewis acid catalysts. 5 During our own studies on the development of new protocols employing these reagents, we demonstrated that indium(III) triflate (In(OTf) 3) is a highly efficient catalyst for the rapid formation of both cyclic and acyclic acetals …

Dec 23, 2020 · Raman spectra of various triflate anion-containing salts in DME solvent and Mg(OTf) 2 powder are presented in Figure 9. The DME spectrum (Figure 9 A) shows strong signals at 367, 397, 821, 849, 994, and 1,025 cm −1. In all Mg(OTf) 2-containing electrolyte solutions (Figures 9 E–9H), we observed three major trends.

May 1, 2021 · Focus Article, Mendeleev Commun., 2021, 31, 282–287 – 285 – Triflate 17 is a useful electrophilic reagent for the preparation of iodonium salts as illustrated by the formation diaryliodonuim triflate 22 and alkenyliodonium salt 23.71 Furthermore, pseudobenziodoxole triflate 17 can be used as a catalyst in oxidative ...