Electrochemical Behavior of Thiocarbonylthio Chain Transfer Agents for RAFT Polymerization was written by Strover, Lisa T.;Cantalice, Alexis;Lam, Jeff Y. L.;Postma, Almar;Hutt, Oliver E.;Horne, Michael D.;Moad, Graeme. And the article was included in ACS Macro Letters in 2019.COA of Formula: C14H12S2 This article mentions the following:
Electrochem. activation of thiocarbonylthio reversible addition-fragmentation chain transfer (RAFT) agents (S=C(Z)S-R) is explored as a potential method for initiating RAFT polymerization under mild conditions without producing initiator-derived byproducts. Herein we apply cyclic voltammetry to establish a predominant reduction mechanism, where electrochem. reduction is coupled to an irreversible first-order chem. reaction. Structure-dependent trends in cyclic voltammograms (CVs), and comparison to absorption spectra, clarify the role of R- and Z-groups in determining reduction processes. The major reduction peak moves to more cathodic potentials in the series dithiobenzoates > trithiocarbonates > heteroaromatic dithiocarbamates > xanthates ∼ N-alkyl-N-aryldithiocarbamates, due to the Z-group influence on thiocarbonyl bond reactivity. More active (electron-withdrawing, radical stabilizing) R-groups shift the reduction peak anodically, in part due to their influence on the rate of the coupled chem. reaction. Anal. of CVs across a range of scan rates revealed that kinetic control over the reduction mechanism is influenced by both the charge transfer rate and chem. reaction rate. In the experiment, the researchers used many compounds, for example, Benzyl benzodithioate (cas: 27249-90-7COA of Formula: C14H12S2).
Benzyl benzodithioate (cas: 27249-90-7) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.COA of Formula: C14H12S2
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics