The 5,6,9,10-tetrahydro-7,8-benzocyclooctenedione 4 has been synthesized through fragmentation of a bicyclo[4.2.0]octane system using an acyloin reaction on the trans-2,3-dicarboethoxy-1,2,3,4-tetrahydronaphthalene 1 in the presence of trimethyl-chlorosilane (TMCS). The two intermediates of this reaction, bis(trimethylsiloxy) derivatives 2 and 3, have been isolated and characterized.
Rue Henri Dunant -94320 Thiais.
SUMMARYFive deuterated indolizines were prepared either by reaction of epichlorhydrine with a-pyridyl lithium, both suitably deuterated, o r by acid o r metal -catalysed exchange.Keywords : Indoliaine, Deuterium Labelling, Catalytic exchange, Sunthesis Le but de ce travail est la synthbse d'indolizines specifiquement deutCriees en w e d'une Ctude par spectromCtrie de vibration et de masse. Bien que la molecule saturee existe h l'etat nature1 et que certains derives aient une activite phnrmacologique (1,2) l'indolizine elle m6me est moins bien connue que son isomere 1' indole. Deux mises au point ont paru recemment ( 3 , 4 ; la plupart des mbthodes de formation du noyau dCcrites ne conviennent pas h la pdparation de composCs specifiquement deutdriks , en raison des rbactifs utilisCs ou des conditions op6ra-toires. 1 1 serait souhaitable de partir d'un noyau indolizinique et d'effectuer des Cchanges ou de remplacer un substituant convenablement choisi par un deuterium.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.