117390-25-7Relevant academic research and scientific papers
Synthesis of Benzimidazolyl Selenophenes
Zubovics, Zoltan,Hevesi, Laszlo
, p. 1033 - 1038 (2007/10/02)
Benzimidazol-2-ylmethaneselenol (5a) and its sodium salt (5b) have been prepared and treated in situ with α,β-unsaturated ketones to give the β-seleno ketones (3).In the absence of a α,β-C=C double bond, the seleno ketones appeared highly prone to retro-Michael type decomposition.Thus, cyclisation to give the tetrahydro- and dihydro-selenophene derivatives (1) and (2) was found to be efficient only in the case of compound (3c) which has an α,β-C=C bond.Some peculiar but not unprecedented reactions such as selenium extrusion from the diselenide (8) and reductive cyclisation of the bis(benzimidazolylmethyl) selenides (9), (10), and (11) were encountered.
