Safety of 2-Ethylbenzo[d]oxazole. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 2-Ethylbenzo[d]oxazole, is researched, Molecular C9H9NO, CAS is 6797-13-3, about Synergistic catalysis: highly diastereoselective benzoxazole addition to Morita-Baylis-Hillman carbonates.
An expedited method was developed for the diastereoselective synthesis of highly functionalized alkyl-azaarene systems with good yield and high diastereoselectivity (>15:1 dr). The methodol. includes a synergistic catalysis event involving organometallic (10 mol% AgOAc) activation of an alkyl azaarene and Lewis base (10 mol% DABCO, 1,4-diazabicyclo[2.2.2]octane) activation of a Morita-Baylis-Hillman carbonate. The structure and relative configuration of a representative product were confirmed by X-ray anal. The synthesis of the target compounds was achieved by a reaction of (alkyl)benzoxazole derivatives, such as 2-ethyl-6-(nitro)benzoxazole, 5-chloro-2-ethyl-6-nitrobenzoxazole, 2-(ethyl)oxazolo[5.4-b]pyridine, 4-methyl-3-nitropyridine, with Morita-Baylis-Hillman carbonates, such as β-[[(1,1-dimethylethoxy)carbonyl]oxy]-α-(methylene)benzenepropanoic acid ester derivatives
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Reference:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem