Organosilver(I) and organozinc(II) catalysed synthesis of quaterphenyls – Experimental and theoretical treatment

Publication date: 15 November 2017 Source:Journal of Organometallic Chemistry, Volume 851 Author(s): Bojidarka Ivanova, Michael Spiteller An essential part of molecular scaffolds of organosilver(I) catalysing reactions of C–H bond activation and C–X (X = C or O) bond formation of polysubstituted benzoic acids in polar medium represent biphenyls, 6H-benzo-[c]-chromene[6]-one, chromeno[5,4,3-cde]chromene-5,10-dione, and 4,10-dioxa-pyrene-5,9-diones. A second strand of catalytic activity is in promoting synthesis of substituted quanterphenyls. This paper is a an extend of the systematic examining of catalytic activity of AgI–containing intermediates of substituted benzoic acids, gaining insights by synthesis of oligomers, studying benzene-1,2,4-tricarboxylic acid (124BA) and benzene-1,3,5-tricarboxylic acid (135BA). Arguably, the optimization of the latter reactions need further effort in order to achieve the standard characteristics allowing their effective implementation as routine routs in the field of organic synthesis. The purpose of this part of the research is mass spectrometric (MS) quantitative kinetic and thermodynamic treatment of collision induced dissociation (CID) reactions comparing experimental reaction kinetics and energetics with quantum chemical modelling of MS fragment processes. Analyses - experimental and theoretical - include deuterium labelled oligomers as the most useful technique studying MS reaction mechanisms. More specifically we treat ei...

Source: Journal of Organometallic Chemistry - September 29, 2017 Category: Chemistry Source Type: research