Accetto Utilizziamo cookies per migliorare il nostro servizio e realizzare statistiche. Questa funzione puó essere disattivata cambiando la configurazione del browser. Continuando a navigare senza modificare questi parametri, consideriamo che l’uso di cookies sia accettato
Thiophene is an important building block in dyes, agrochemicals and pharmaceuticals synthesis. It is involved in the chloroalkylation reactions in 2,5-positions. It is also used to prepare butane by reduction with raney nickel, 2-vinylthiophene, dithienyl, and 2-halo thiophenes by reacting with halogens.
Metallation at the 2-position occurs readily with n-BuLi in ether (not readily in benzene). The 2,5-dilithio-derivative can be prepared in the presence of TMEDA: J. Chem. Soc., Perkin 1, 887 (1977), or with the superbasic combination of n-BuLi with KO-t-Bu: Synthesis, 316 (1988).
Smith, Z. C.; Meyer, D. M.; Simon, M. G.; Staii, C.; Shukla, D.; Thomas III, S. W. Thiophene-Based Conjugated Polymers with Photolabile Solubilizing Side Chains. Macromolecules 2015, 48 (4), 959-966.
Ghosh, T.; Gopal, A.; Saeki, A.; Seki, S.; Nair, V. C. p/n-Polarity of thiophene oligomers in photovoltaic cells: role of molecular vs. supramolecular properties. Phys. Chem. Chem. Phys. 2015, 17 (16), 10630-10639.
Dichiarazioni di rischio (UE): H225-H302-H312-H331-H315-H319
Highly flammable liquid and vapour. Harmful if swallowed. Harmful in contact with skin. Toxic if inhaled. Causes skin irritation. Causes serious eye irritation.
Dichiarazioni precauzionali: P210-P261-P303+P361+P353-P305+P351+P338-P405-P501a
Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Avoid breathing dust/fume/gas/mist/vapours/spray. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.