Safety of 2,6-Dichloropurine. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 2,6-Dichloropurine, is researched, Molecular C5H2Cl2N4, CAS is 5451-40-1, about Synthesis and fluorescent properties of N(9)-alkylated 2-amino-6-triazolylpurines and 7-deazapurines. Author is Sisulins, Andrejs; Bucevieius, Jonas; Tseng, Yu-Ting; Novosjolova, Irina; Traskovskis, Kaspars; Bizdena, Erika; Chang, Huan-Tsung; Tumkevieius, Sigitas; Turks, Maris.
The synthesis of novel fluorescent N(9)-alkylated 2-amino-6-triazolylpurine and 7-deazapurine derivatives is described. A new C(2)-regioselectivity in the nucleophilic aromatic substitution reactions of 9-alkylated-2,6-diazidopurines and 7-deazapurines with secondary amines has been disclosed. The obtained intermediates, 9-alkylated-2-amino-6-azido-(7-deaza)purines, were transformed into the title compounds by CuAAC reaction. The designed compounds belong to the push-pull systems and possess promising fluorescence properties with quantum yields in the range from 28% to 60% in acetonitrile solution Due to electron-withdrawing properties of purine and 7-deazapurine heterocycles, which were addnl. extended by triazole moieties, the compounds with electron-donating groups showed intramol. charge transfer character (ICT/TICT) of the excited states which was proved by solvatochromic dynamics and supported by DFT calculations In the 7-deazapurine series this led to increased fluorescence quantum yield (74%) in THF solution The compounds exhibit low cytotoxicity and as such are useful for the cell labeling studies in the future.
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Oxazolidine – Wikipedia,
Oxazolidine | C3H7NO – PubChem