Synthesis of new molecular scaffolds: 3-aza-7,9-dioxa-bicyclo[4.2.1]nonane (8-exo BTKa) and 3-aza-8,10-dioxa-bicyclo[5.2.1]decane (9-exo BTKa) carboxylic acids
Two classes of enantiopure molecular scaffolds were prepared, whose lactam structure formally derivesfrom the coupling between tartaricacid and β- or γ-ketoamines. We labelled these compounds as 8-exo and 9-exo BTKa, indicating the lactam size (8- and 9-membered ring, respectively). Starting from β- and γ-nitroketones, the synthesis involves the ketal formation by (R,R)-dimethyl tartrate. The subsequent
Process for preparing optically active carbonyl compounds
申请人:ZAMBON S.p.A.
公开号:EP0217375B1
公开(公告)日:1991-01-16
US4764641A
申请人:——
公开号:US4764641A
公开(公告)日:1988-08-16
A MILD AND STEREOSPECIFIC CONVERSION OF VICINAL DIOLS INTO OLEFINS VIA 2-METHOXY-1,3-DIOXOLANE DERIVATIVES
作者:Masayoshi Ando、Hiroshi Ohhara、Kahei Takase
DOI:10.1246/cl.1986.879
日期:1986.6.5
An efficient and practical method for the stereospecific synthesis of olefins from vicinal diols via the corresponding 2-methoxy-1,3-dioxolanes is reported.
报道了一种通过相应的 2-甲氧基-1,3-二氧戊环从邻二醇立体定向合成烯烃的有效且实用的方法。
Synthesis of acetal protected building blocks using flow chemistry with flow I.R. analysis: preparation of butane-2,3-diacetal tartrates
作者:Catherine F. Carter、Ian R. Baxendale、Matthew O'Brien、John B. J. Pavey、Steven V. Ley
DOI:10.1039/b917289k
日期:——
The syntheses of butane-2,3-diacetal protected tartrate derivatives are described using continuous flow processing techniques with in-line purification and I.R. analytical protocols.