86087-13-0Relevant academic research and scientific papers
Graphene-catalyzed transacetalization under acid-free conditions
Nongbe, Medy C.,Oger, Nicolas,Ekou, Tchirioua,Ekou, Lynda,Yao, Benjamin K.,Le Grognec, Erwan,Felpin, Fran?ois-Xavier
, p. 4637 - 4639 (2016/09/23)
1,2- and 1,3-Diols are readily protected as cyclic acetals and ketals through a graphene-catalyzed transacetalization process. The methodology features an atom economic procedure since quasi-stoichiometric conditions have been developed. Unlike prior systems, the graphene-catalyzed transacetalization is performed under Br?nsted and Lewis acid-free conditions and without solvent. Our method has been applied to several volatile compounds that are unsuitable for complex work-up and extensive purification steps. The very unusual catalytic properties of graphene for transacetalization reactions are ascribed to molecular charge transfer between graphene and substrates.
Enantioselective route to aryl(1,3-butadien-2-yl)methanols: Formal synthesis of (-)-sporochnol a
Yanagimoto, Daisuke,Kawano, Kazuyuki,Takahashi, Keisuke,Ishihara, Jun,Hatakeyama, Susumi
scheme or table, p. 249 - 253 (2009/09/06)
Ti(IV)-promoted reaction of the chiral acetals derived from aromatic aldehydes with 1-(tri-n-butyl)stannyl-2,3-butadiene followed by removal of the chiral auxiliary gave aryl(1,3-butadien-2-yl)methanols with high enantiomeric purity (>90% ee). The synthet
