[EN] IMPROVEMENTS IN OR RELATED TO ORGANIC COMPOUNDS<br/>[FR] AMELIORATIONS APPORTEES A DES COMPOSES ORGANIQUES
申请人:GIVAUDAN SA
公开号:WO2007071085A1
公开(公告)日:2007-06-28
[EN] Malodour counteracting preparations for oral use comprising esterified fumarates of the formula (I) wherein X and Y have the same meaning as given in the description, is disclosed. Furthermore, the invention refers to a process for their preparation and to their use for preventing or reducing oral malodour. [FR] La présente invention concerne des préparations pour application buccale destinées à lutter contre les mauvaises odeurs, comprenant des fumarates estérifiés de formule (I) dans laquelle X et Y ont les correspondances indiquées dans la description. L'invention a également pour objet un procédé pour les préparer et leur utilisation pour prévenir ou réduire la mauvaise haleine.
A Lewis acid-promoted cyclization of ethenetricarboxylate derivative aromatic compounds. Novel syntheses of oxindoles and benzofuranones via Friedel–Crafts intramolecular Michael addition
A novel cyclization reaction of ethenetricarboxylate derivative aromatic compounds in the presence of various Lewis acids gave benzo-annulated cyclic compounds such as oxindole and benzofuran derivatives via Friedel-Craftsintramolecular Michael addition in high yields. For example, the reaction of diethyl 2-[(N-methyl-N-phenylcarbamoyl)methylene]malonate (1a) in the presence of ZnCl2 at room temperature