143746-69-4Relevant academic research and scientific papers
Microwave Assisted Synthesis of Heterocyclic Fused Quinones in Dry Media
Acosta, A.,Cruz, P. de la,Miguel, P. De,Diez-Barra, E.,Hoz, A. de la,et al.
, p. 2165 - 2168 (1995)
Microwave assisted cyclization of several 2-thenoylbenzoic acids 2 catalysed with clays in dry media is studied.Some clays were tested and Montmorillonite K-10, free of quarz and feldspar, was shown to be an effective catalyst for their easy conversion into the corresponding heterocyclic fused quinone in good yields.A specific effect of microwave irradiation accelerating the reaction with respect to conventional heating in the same conditions is observed.
Novel ?-Extended Thiophene-Fused Electron Acceptors for Organic Metals
Cruz, Pilar de la,Martin, Nazario,Miguel, Fuencisla,Seoane, Carlos,Albert, Armando,et al.
, p. 6192 - 6198 (2007/10/02)
Novel ?-extended thiophene-fused TCNQ-type and DCNQI-type acceptors have been synthesized from the corresonding quinones by reaction with Lehnert's reagent and bis(trimetylsilyl)carbodiimide (BTC), respectively.Additionally, an example of the little-known hybrid TCNQ-DCNQI-type acceptor has also been obtained.The cyclic voltammetric data of the novel acceptors reveal two different behaviours for these molecules.The TCNQ-type derivatives exhibit a two-electron single-wave reduction to the dianion, as confirmed by controlled potential coulometry analysis.The DCNQI-type derivatives display two reduction waves to the corresponding radical anion and dianion.The same behaviour is shown by the hybrid TCNQ-DCNQI derivative.The acceptor ability is related to molecular planarity, and a comparative crystallographic study involving TCNQ-type and DCNQI-type derivatives (6a, 7a, and 8a) has been performed.
