370 A.Z. Rys et al.
5.18. Decomposition of dihydroselenophene 9d
A solution of 11 mg (0.04 mmol) of dihydroselenophene 9d was refluxed in 0.5 ml of 1,2,4-
trichlorobenzene with 7 mg (0.04 mmol) bibenzyl as an internal standard added. Small samples
were analyzed by NMR (CDCl3) without the removal of solvent.
6. Supporting Information Available
1H NMR, 13C NMR and 77Se NMR spectra for selected compounds.
Acknowledgements
We thank the Natural Sciences and Engineering Research Council of Canada for support. We thank Professor D. Scott
Bohle and Dr Lijuan Zhang for solving X-ray structure of compound 2d, as well as Francine Belanger-Gariepy for solving
structure 20.
Notes
1. For a more complete list see (2k).
2. The spin states of Se2 have been theoretically established with the singlet state lower than the triplet by a range
of 11.5–16 kcal/mol: see National Institute of Standards and Technology (NSIT), Gaithersburg, MD, 20899–1070.
3. For other selenophene-related references see (8c).
4. We have used a microwave oven applying conditions described by Illescas et al. (14).
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