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Neste trabalho foram estudados os efeitos eletrônicos induzidos por p-substituintes no anel fenilico de diversos compostos carbonílicos conjugados (4-p-R-fenil-1-(1,3-ditiolano-2-ilideno)- 3E-buteno-2-ona, onde R=NO2, Cl, Br, OMe, NEt2 (2-6)), e sua reatividade frente a Fe2(CO)9 usando o diagrama de Hammett. A estrutura dos compostos (3 e 4b) foi totalmente estabelecida por análise de difração de raio-X. The electronic effects induced by p-substituents on the phenyl ring of several novel cross- conjugated carbonyl compounds (4-p-R-phenyl-1-(1,3-dithiolane-2-ylidene)-3E-butene-2-one, where R= NO2, Cl, Br, OMe, NEt2 (2-6),) and their reactivity towards Fe2(CO)9 have been studied using a Hammett plot. The structure of two compounds (3 and 4b) was fully established by X-ray diffraction analysis.

Electronic effects on the reactivity of cross-conjugated carbonyl systems with Fe2(CO)9