《Concise Synthesis of Isocoumarins through Rh-Catalyzed Direct Vinylene Annulation: Scope and Mechanistic Insight》 was written by Mihara, Gen; Ghosh, Koushik; Nishii, Yuji; Miura, Masahiro. SDS of cas: 872-36-6 And the article was included in Organic Letters in 2020. The article conveys some information:
Transition-metal-catalyzed activation of inert C-H bonds and subsequent C-C bond formation have emerged as powerful synthetic tools for the synthesis of elaborate cyclic mols. In this report, an efficient synthetic method of 3,4-unsubstituted isocoumarins adopting an electron-deficient CpERh complex [CpE = 1,3-bis(ethoxycarbonyl)-2,4,5-trimethylcyclopentadienyl] as the catalyst is introduced. The use of vinylene carbonate as a vinylene transfer reagent enables the direct construction of isocoumarins I (R = H, 6-OMe, 8-OH, etc.) from readily available benzoic acids II, without any external oxidants as well as bases. The reaction mechanism is evaluated by computational anal. to find an unprecedented “”rhodium shift”” event within the catalytic cycle. The results came from multiple reactions, including the reaction of Vinylene carbonate(cas: 872-36-6SDS of cas: 872-36-6)
Vinylene carbonate(cas: 872-36-6) belongs to esters. Alkyl carbonates find applications as solvents for lithium ion battery electrolytes and the use of high quality battery grade electrolytes having extremely low water (<10 ppm) and acid (<10 ppm) contents are critical for achieving high electrochemical performance.SDS of cas: 872-36-6
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics