New bicyclic peroxyketal comprising cyclopropyl moieties, analogs of the G3-factor, have been synthesized and evaluated against Plasmodium falciparum. They exhibit modest antimalarial activities. In order to investigate their mode of action, Fe(II) induced reduction was managed allowing us to establish mechanisms involved on the basis of the structure of the final products. Self-quenching and polymerization
Unexpected nucleophilic behaviour of free-radicals generated from α-iodoketones
作者:Corinne De Dobbeleer、Jiří Pospíšil、Freija De Vleeschouwer、Frank De Proft、István E. Markó
DOI:10.1039/b901943j
日期:——
The unexpected nucleophilic reactivity of free-radicals generated from α-iodoketones is reported; two different procedures, either employing tin or the more environmentally acceptable ethylsulfone-based coupling reagent 5c have been developed.
Préparation des organozinciques dérivés de l'α-bromométhyl acrylate d'éthyle et de ses homologues
作者:Najat El Alami、Chantal Belaud、Jean Villiéras
DOI:10.1016/0022-328x(88)80333-4
日期:1988.6
α-bromoalkyl acrylates (aliphatic and alicyclic) results in high yields when carried out on 30 mesh activated granular zinc, between 14 and 20°C in ethereal solvents (THF, DME, ether). Under these conditions duplication can be minimized (5–15%) especially with t-butyl acrylates. These α-functional allylic organozinc derivatives have been characterized by hydrolysis and coupling with benzaldehyde.