2022
DOI: 10.1002/cptc.202200215
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High N‐H Photoacidity of a Nitrogen‐Rich Fused Ring Heteroaromatic Scaffold

Abstract: It is shown that 4-methyl-7-(4-nitrophenyl)-triazolo[3,2-c]triazole exhibits a high photoacidity, unprecedented in neutral molecules in which the proton is delivered by a NH bond, which promotes acetalization of aldehydes under irradiation by a near-UV low power LED. Time dependent transient absorption spectroscopy shows a series of stimulated emission signals attributable to photo-tautomerization and formation of the deprotonated species, followed by broad positive absorption band which does not decay within … Show more

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