References
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- Umeda, R.; Namba, T.; Yoshimura, T.; Nakatsukasa, M.; Nishiyama, Y. Tetrahedron 2013, 69, 1526–1531.
- The treatment of Lewis acids such as BF3 · Et2O also gave only decomposed materials.
- No reaction of benzanthrone (1) and other metal acetylides, such as sodium phenylacetylide and phenylethynylmagnesium bromide, was observed.
- We did not have an experimental evidence about the driving force of the dehydrogenation process.