The present invention provides a process for producing a 2-acylthiophene compound which has a low content of the 3-isomer generated as a by-product, the process comprising reacting a thiophene compound represented by formula (1):
wherein R
1
is a hydrogen atom, a C
1-6
alkyl group, a phenyl group, or a halogen atom, with at least one member selected from the group consisting of acid anhydrides represented by formula (2):
wherein R
2
is a C
1-6
alkyl group or a phenyl group, and acid halides represented by formula (3):
wherein R
2
is as defined above and X is a halogen atom, in the presence of a solid acid catalyst at a temperature less than 75° C. in the absence of solvent, thus producing a 2-acylthiophene compound represented by formula (4):
wherein R
1
and R
2
are as defined above.
The present invention provides a process for producing a 2-acylthiophene compound which has a low content of the 3-isomer generated as a by-product, the process comprising reacting a thiophene compound represented by formula (1) :
wherein R1 is a hydrogen atom, a C1-6 alkyl group, a phenyl group, or a halogen atom, with at least one member selected from the group consisting of acid anhydrides represented by formula (2):
wherein R2 is a C1-6 alkyl group or a phenyl group, and
acid halides represented by formula (3):
wherein R2 is as defined above and X is a halogen atom,
in the presence of a solid acid catalyst at a temperature less than 75°C in the absence of solvent, thus producing a 2-acylthiophene compound represented by formula (4):
wherein R1 and R2 are as defined above.
Synthesis of thiophene–pyrrole mixed oligomers end-capped with hexyl group for field-effect transistors
作者:Mika Fujii、Tohru Nishinaga、Masahiko Iyoda
DOI:10.1016/j.tetlet.2008.11.061
日期:2009.2
Mixed thiophene–N-methylpyrrole oligomers composed of the five and six heterocycles and hexyl substituents at both ends were synthesized, and their structural, electronic, and field-effect properties were investigated. These oligomers behaved as good p-type semiconductors on FET devices and the mixed hexamer with a nearly linear structure showed higher hole mobility (5.3 × 10−2 cm2 V−1 s−1) than that
合成了由两个末端的五个和六个杂环和己基取代基组成的混合噻吩-N-甲基吡咯低聚物,并研究了它们的结构,电子和场效应性质。这些低聚物在FET器件上表现为良好的p型半导体,具有接近线性结构的混合六聚物显示出比具有香蕉型五聚体的更高的空穴迁移率(5.3×10 -2 cm 2 V -1 s -1)。结构体。