ENANTIOSPECIFIC SYNTHESIS OF (+)-ERYTHRO-(5<i>S</i>,6<i>R</i>)-6-ACETOXY-5-HEXADECANOLIDE, AN OPTICALLY ACTIVE FORM OF THE MAJOR COMPONENT OF A MOSQUITO OVIPOSITION ATTRACTANT PHEROMONE
作者:Yukio Masaki、Kinnosuke Nagata、Kenji Kaji
DOI:10.1246/cl.1983.1835
日期:1983.12.5
(+)-Erythro-(5S,6R)-6-acetoxy-5-hexadecanolide, an optically active form of the majorcomponent of an ovipositionattractantpheromone of a mosquitoCulexpipiensfatigans, was synthesized enantiospecifically from (+)-(R,R)-diethyl tartrate.
Facile and rapid entry to functionalized and optically active pyrans from tartaric acid by way of 6,8-dioxabicyclo[3.2.1]Octanes. Application to the synthesis of (−)-(6s,1′s)-pestalotin
Optically active 7-exo-substituted-3-p-tosyl-6,8-dioxabicyclo[3.2.1]-octanes prepared from (+)-(R,R)-diethyl tartrate in four or five steps sequence effectively utilizing the inherent C2 symmetry of tartrate, underwent acetolysis to lead to the new type of functionalized and optically active 3,4-dihydro-2Hpyrans in high yields. An application to the unambiguous synthesis of (-)-(6S,1′S)-pestalotin
Visible light-initiated manganese-catalyzed hydrosulfonylation of alkenes
作者:Chun-Min Li、Xin-Xin Dong、Zhe Wang、Bo Zhang
DOI:10.1039/d3gc00712j
日期:——
A visible light-initiated manganese-catalyzed radical hydrosulfonylation of a wide range of structurally diverse alkenes using commercially available and relatively cheap sulfonyl chlorides as sulfonyl radical sources is described.