134640-58-7Relevant academic research and scientific papers
Synthesis of unsymmetrical 2,3-diaryl- and 2,4-diarylthiophenes starting from 2,5-dichlorothiophene
Sone,Sato,Umetsu,Yoshino,Takahashi
, p. 2187 - 2194 (2007/10/02)
Unsymmetrically substituted 2,4-diaryl- and 2,3-diarylthiophenes were synthesized from 2,5-dichlorothiophene via 4-aryl-2-chlorothiophenes in two and four steps including Ni-mediated cross-coupling, respectively. Aluminum chloride-catalyzed reaction of 3-aryl-2-chlorothiophenes with some aromatic ethers unexpectedly led to the formation of the corresponding 2,4-isomers.
Synthesis of 3,4'-Diaryl- and 4,4'-Diaryl-2,2'-bithienyls from 2,5-Dichlorothiophene
Sone, Tyo,Umetsu, Yasuhiro,Sato, Kazuaki
, p. 864 - 868 (2007/10/02)
3,4'-Diaryl- and 4,4'-diaryl-2,2'-bithienyls, new classes of mixed thiophene-arene oligomers, were synthesized from 2,5-dichlorothiophene via 4-aryl-2-chlorothiophene in three and two steps, respectively.Namely, a Friedel-Crafts type self-condensation of 4-aryl-2-chlorothiophene, followed by catalytic dechlorination, yielded unsymmetrical bithienyls.Homocoupling of 4-aryl-2-chlorothiophene using a nickel-phosphine catalyst gave symmetrical bithienyls.
