title: Organic acid induced olefination reaction of lactones.
abstract: (Z)-Selective olefination of several lactones with ketene silyl acetals was achieved by the catalysis of carbon acids (C-H acids) having a bis(triflyl)methyl group as an acidic functionality; in particular, the triple carbon acid having three bis(triflyl)methyl groups in phloroglucinol shows an excellent catalytic performance.
authors: School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan. yanai@toyaku.ac.jp
authors: Hikaru
authors: H
authors: Yanai
authors: Takeo
authors: T
authors: Taguchi
mesh_terms: D000080:Acetals / Q000737:chemistry; D000475:Alkenes / Q000737:chemistry*; D002255:Carbonic Acid / Q000737:chemistry*; D002384:Catalysis; D005030:Ethylenes / Q000737:chemistry; D007659:Ketones / Q000737:chemistry; D007783:Lactones / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D000080:Acetals; D000475:Alkenes; D005030:Ethylenes; D007659:Ketones; D007783:Lactones; D002255:Carbonic Acid; C008223:ketene