Convenient Synthesis of Benzo[b]thiophene-5,6-dicarboximide Derivatives and Their Photophysical Properties
Naoki Kobayashi,
Shinya Yamamoto,
Haruki Shimosasa,
Mitsunori Oda,
Ryuta Miyatake
Issue:
Volume 4, Issue 5, October 2016
Pages:
45-51
Received:
5 October 2016
Accepted:
18 October 2016
Published:
10 November 2016
Abstract: Phosphine-assisted annulation of thiophene-2,3-dicarbaldehyde with N-substituted maleimides provided the N-substituted benzo[b]thiophene-5,6-dicarboximides in good to high yields. Introduction of cyano and aryl groups to the thiophene moiety of the N-cyclohexyl product was achieved by metal-catalyzed coupling reactions via its bromo derivative. Photophysical properties of the products were also reported.
Abstract: Phosphine-assisted annulation of thiophene-2,3-dicarbaldehyde with N-substituted maleimides provided the N-substituted benzo[b]thiophene-5,6-dicarboximides in good to high yields. Introduction of cyano and aryl groups to the thiophene moiety of the N-cyclohexyl product was achieved by metal-catalyzed coupling reactions via its bromo derivative. Pho...
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