Quality Control of 5-Methylfuran-2(3H)-one. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 5-Methylfuran-2(3H)-one, is researched, Molecular C5H6O2, CAS is 591-12-8, about Synthesis of Chiral γ,γ-Disubstituted γ-Butenolides via Direct Vinylogous Aldol Reaction of Substituted Furanone Derivatives with Aldehydes. Author is Sakai, Takaaki; Hirashima, Shin-ichi; Matsushima, Yasuyuki; Nakano, Tatsuki; Ishii, Daiki; Yamashita, Yoshifumi; Nakashima, Kosuke; Koseki, Yuji; Miura, Tsuyoshi.
In the presence of a quinine-derived squaramide-sulfonamide, aldehydes RCHO (R = 4-ClC6H4, 3-ClC6H4, 2-ClC6H4, 4-BrC6H4, 4-F3CC6H4, Ph, 4-MeC6H4, 4-MeOC6H4, 1-naphthyl, 2-naphthyl, 2-furanyl, cyclohexyl, BuCH2) underwent regioselective, diastereoselective, and enantioselective vinylogous aldol addition reactions with γ-substituted β,γ-butenolides such as γ-angelica lactone to yield anti-(hydroxymethyl)butenolides such as I (R = 4-ClC6H4, 3-ClC6H4, 2-ClC6H4, 4-BrC6H4, 4-F3CC6H4, Ph, 4-MeC6H4, 4-MeOC6H4, 1-naphthyl, 2-naphthyl, 2-furanyl, cyclohexyl, BuCH2) in up to 95% ee.
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Reference:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia