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pH-dependent conformational switching in 2,6-benzamidodiphenylacetylenes.

Angewandte Chemie (International ed. in English) (2011-12-17)
Ian M Jones, Hannah Lingard, Andrew D Hamilton
ZUSAMMENFASSUNG

The conformational equilibrium of a pH-dependent switch based on an intramolecularly H-bonded diphenylacetylene can be predictably biased by using electron-donating or -withdrawing groups. Furthermore, protonation of the electron-donating dimethylamino group converts it into an electron-withdrawing dimethylammonium cation with a concomitant switch in conformation.

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Sigma-Aldrich
Diphenylacetylen, 98%