Karuppusamy, Velusamy published the artcileBF3·OEt2-TFAA Mediated Tetra-Functionalization of Amino Acids – Synthesis of Di- and Tri-Substituted 2-Trifluoromethyl Oxazoles in One Pot, COA of Formula: C11H10O, the publication is Organic Letters (2020), 22(18), 7147-7151, database is CAplus and MEDLINE.
A highly efficient, TFAA-BF3·OEt2 mediated multicomponent coupling of amino acid, TFAA, and aromatics provides a broad library of 2-trifluoromethyl equipped 2,5-disubstituted/2,4,5-trisubstituted oxazoles or N-(trifluoroacetyl)-β-aminoalkyl ketones. This amino acid tetra-functionalization approach involves amidation (C-N), anhydride (C-O), Friedel-Crafts acylation (C-C), and Robinson-Gabriel annulation (C-O) followed by dehydrative aromatization. This reaction takes place under operationally simple, mild, and metal-free conditions using readily available amino acids and aromatic compounds
Organic Letters published new progress about 93-04-9. 93-04-9 belongs to ethers-buliding-blocks, auxiliary class Naphthalene,Ether, name is 2-Methoxynaphthalene, and the molecular formula is C11H10O, COA of Formula: C11H10O.
Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem