The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Visible-light-promoted 3,5-dimethoxyphenyl glycoside activation and glycosylation》. Authors are Cao, Yafei; Zhou, Minmin; Mao, Run-Ze; Zou, You; Xia, Feng; Liu, Da-Ke; Liu, Jianhui; Li, Qin; Xiong, De-Cai; Ye, Xin-Shan.The article about the compound:2,6-Dichloropurinecas:5451-40-1,SMILESS:C2=NC1=C(C(=NC(=N1)Cl)Cl)[NH]2).Synthetic Route of C5H2Cl2N4. Through the article, more information about this compound (cas:5451-40-1) is conveyed.
A new glycosylation method promoted by visible light with 3,5-dimethoxyphenyl glycoside as the donor was developed. This protocol delivers both O-glycosides and N-glycosides in moderate to excellent yields using a wide range of O-nucleophiles and nucleobases as the glycosyl acceptors.
Although many compounds look similar to this compound(5451-40-1)Synthetic Route of C5H2Cl2N4, numerous studies have shown that this compound(SMILES:C2=NC1=C(C(=NC(=N1)Cl)Cl)[NH]2), has unique advantages. If you want to know more about similar compounds, you can read my other articles.
Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H7NO – PubChem