Thiophene reacts with aliphatic ketones in aqueous 75% v/v sulfuric acid to give condensation products containing up to five thiophene units. Ketones bearing phenyl substituents yield mono- and di-styrylthiophenes. All the reactions occur at the C-2 and -5 positions of thiophene. 2,5-Bis(α-phenylstyryl)thiophene undergoes photocyclisation to give a dinaphthothiophene.
Gol'dfarb; Konstantinow, Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1959, p. 121,127; engl. Ausg. S. 108, 113
作者:Gol'dfarb、Konstantinow
DOI:——
日期:——
Condensation of Thiophene and Homologs with Ketones
作者:John W. Schick、Duncan J. Crowley
DOI:10.1021/ja01147a532
日期:1951.3
SONE, TYO;OHBA, YOSHIHIRO;WATANABE, RYUJI, BULL. CHEM. SOC. JAP., 62,(1989) N, C. 1346-1348
作者:SONE, TYO、OHBA, YOSHIHIRO、WATANABE, RYUJI
DOI:——
日期:——
Nontemplate Synthesis of Macrocyclic Tetraimine Schiff Bases Incorporating Dithienylmethane Units
作者:Tyo Sone、Yoshihiro Ohba、Ryuji Watanabe
DOI:10.1246/bcsj.62.1346
日期:1989.4.15
Novel 26- and 28-membered macrocyclic tetraimine Schiff bases incorporating four thiophene units as ring constituents were synthesized by a nontemplate method starting from bis(5-formyl-2-thienyl)m...