Recommanded Product: (R)-Oxiran-2-ylmethanolOn October 15, 2020 ,《Determining the relative reactivity of sulfate, bisulfate, and organosulfates with epoxides on secondary organic aerosol》 was published in ACS Earth and Space Chemistry. The article was written by Aoki, Erika; Sarrimanolis, Jon N.; Lyon, Sophie A.; Elrod, Matthew J.. The article contains the following contents:
Extensive laboratory and field studies have identified nucleophilic addition reactions of isoprene epoxydiols (IEPOX) as key pathways for the formation of isoprene-derived secondary organic aerosol (SOA). Organosulfates are important reaction products of these processes, but it is unclear whether sulfate and/or bisulfate nucleophiles are responsible for their formation and whether the organosulfates themselves can serve as nucleophiles in oligomer-forming reactions. The relative reactivities (nucleophilic strengths relative to water) of sulfate, bisulfate, and Me sulfate anion were measured through a series of model epoxide-nucleophile experiments using NMR (NMR) spectroscopy. These experiments also helped establish a rigorous understanding of the effects of differing carbon substitution and functional groups of epoxides on the modulation of the effective nucleophilicites of sulfate, bisulfate, and Me sulfate anions. It was determined that the nucleophilicites of bisulfate and Me sulfate anions were about 100 and 50 times, resp., weaker than sulfate toward most of the epoxides studied, which was rationalized by computational estimates of their thermodn. basicities. Therefore, for most SOA acidity situations, sulfate-epoxide reactions are expected to be the main source of organosulfate aerosol constituents. Because sulfate-epoxide reactions stoichiometrically consume acid, these reactions also have the capability of raising the pH of SOA, thus slowing down all acid-catalyzed chem. processes. No evidence for the reaction of the Me sulfate anion was observed with the abundant atmospherically relevant epoxide, trans-β-IEPOX, thus suggesting that oligomerization reactions via epoxide-organosulfate reactions may not be able to compete with stronger (such as sulfate) or more abundant (such as water) nucleophiles on actual SOA.(R)-Oxiran-2-ylmethanol(cas: 57044-25-4Recommanded Product: (R)-Oxiran-2-ylmethanol) was used in this study.
(R)-Oxiran-2-ylmethanol(cas: 57044-25-4) is a chiral building block used to construct an epoxyvinyl iodide intermediate in a synthesis of a furanocembrane, a marine natural product.Recommanded Product: (R)-Oxiran-2-ylmethanol
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