Synthesis of functionalized thiophenes and oligothiophenes by selective and iterative cross-coupling reactions using indium organometallics
作者:M. Montserrat Martínez、Miguel Peña-López、José Pérez Sestelo、Luis A. Sarandeses
DOI:10.1039/c2ob25123j
日期:——
The synthesis of unsymmetrical 2,5-disubstituted thiophenes by selective and sequential palladium-catalyzed cross-couplingreactions of indiumorganometallics with 2,5-dibromothiophene is reported. Following an iterative coupling sequence, α-oligothiophenes were synthesized in good yields and with high atom economy.
CARPITA, A.;ROSSI, R.;VERACINI, C. A., TETRAHEDRON, 1985, 41, N 10, 1919-1929
作者:CARPITA, A.、ROSSI, R.、VERACINI, C. A.
DOI:——
日期:——
Synthesis and 13C nmr characterization of some π-excessive heteropolyaromatic compounds
作者:Adriano Carpita、Renzo Rossi、Carlo Alberto Veracini
DOI:10.1016/s0040-4020(01)96555-x
日期:1985.1
Several π-excessive heteropolyaromatic compounds, which contain furan and thiophen ring and are possible antifungal agents, have been synthesized in good yields according to two general methods. The first method has been used to prepare compounds possessing thiophens linked by their 2- and 5-positions, such as the ter-aryls 2b, 2d and 2a. Two precursors of these compounds have been obtained either
Various types of mixed heteroatene oligomers can be readily prepared from heteroarene dihalides via stepwise coupling with heteroaryl Grignard reagents catalysed by a palladium–phosphine complex.