1332705-23-3Relevant articles and documents
Selective mono- to perarylations of tetrabromothiophene by a cyclobutene-1,2-diylbisimidazolium preligand
Rahimi, Alireza,Namyslo, Jan C.,Drafz, Martin H. H.,Halm, Julian,Huebner, Eike,Nieger, Martin,Rautzenberg, Nicola,Schmidt, Andreas
experimental part, p. 7316 - 7325 (2011/11/05)
(Cyclobut-1-ene-1,2-diyl)bis(1-methylimidazolium)tetrafluoroborate is applied as preligand in palladium-catalyzed cross-coupling reactions starting from tetrabromothiophene for the synthesis of mono-, bi-, tri-, and tetraaryl-substituted thiophenes bearin