HPLC of Formula: 118994-89-1. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Ethyl oxazole-5-carboxylate, is researched, Molecular C6H7NO3, CAS is 118994-89-1, about Continuous flow as an enabling technology: a fast and versatile entry to functionalized glyoxal derivatives. Author is Lima, Fabio; Meisenbach, Mark; Schenkel, Berthold; Sedelmeier, Joerg.
Two complementary strategies employing organolithium chem. for the synthesis of glyoxal derivatives RC(O)R1R2 (R = methoxymethyl, 3,5-difluorophenyl, pyridin-2-yl, quinolin-6-yl, etc.; R1 = Cl, OEt, H; R2 = Cl, OEt, 3-chlorophenyl) were reported. Micro-mixer technol. allows for the generation of unstable organometallic intermediates and their instantaneous in-line quenching with esters as electrophiles RC(O)OEt. Selective mono-addition was observed via putative stabilized tetrahedral intermediates. Advantages offered by flow chem. technologies facilitate direct and efficient access to masked 1,2-dicarbonyl compounds while mitigating undesired byproduct formation. These two approaches enable the production of advanced and valuable synthetic building blocks for heterocyclic chem. with throughputs of grams per min.
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