Chemistry Letters p. 613 - 616 (1992)
Update date:2022-08-04
Topics:
Brettle, Roger
Dunmur, David A.
Marson, Charles M.
Pinol, Milagros
Toriyama, Kazuhisa
A homologous series of 2-alkyl-5-(4'-cyanophenyl)thiophenes has been prepared and shown to have improved properties for use in liquid crystal displays.The thiophene ring is prepared from a 1-(4'-bromophenyl)-1,4-dioxoalkane, constructed using the Stetter procedure, by the action of Lawessons reagent, and the cyano-group is finally introduced using a copper(I)-mediated exchange reaction.
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