Rentzsch, Christoph F.; Tosh, Evangeline; Herrmann, Wolfgang A.; Kuehn, Fritz E. published the artcile< Iridium complexes of N-heterocyclic carbenes in C-H borylation using energy efficient microwave technology: influence of structure, ligand donor strength and counter ion on catalytic activity>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is chlorocyclooctadieneiridium reaction ethanolate azolium salt anion exchange; arene borylation microwave catalyst bridged unbridged NHC iridium cationic; bridged unbridged cationic NHC iridium preparation catalyst borylation arene; pinacol benzene boronate preparation catalyst cationic NHC iridium.
Bridged and unbridged N-heterocyclic carbene (NHC) ligands were metalated with [Ir(COD)Cl]2 to give Ir(I) mono- and biscarbene substituted catalysts [Ir(COD)NHC(Cl)] and [Ir(COD)(NHC)2][X] (X: I, PF6, BF4, CF3COO, OTf). The prepared NHC-complexes were tested in the C-H borylation reaction of aromatic carbons with bis(pinacolato)diboron (B2pin2) and pinacolborane (HBpin). The use of microwave technol. in this study not only facilitates a time efficient screening of a wide range of influences such as ligand σ-donor strength and structural motif as well as the effects of the complex counterion, but also provides an energy efficient heating source. Catalyst (η4-1,5-cyclooctadiene)(1,1′-methyl-3,3′-propylene-diimidazol-2,2′-diylidene)iridium(I) trifluoroacetate (6TFA), which features a chelating NHC ligand, proved to be the most effective catalyst and further studies with this complex in the borylation of mono- and disubstituted benzene derivatives exploring chemo- and regioselectivity were undertaken.
Green Chemistry published new progress about Acidity. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate.
Referemce:
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