1869-76-7Relevant articles and documents
Visible-Light-Promoted [5 + 1] Annulation Initiated by Electron-Donor-Acceptor Complexes: Synthesis of Perfluoroalkyl-s-Triazines
Wang, Rui,Wang, Lili,Xu, Qin,Ren, Bao-Yi,Liang, Fushun
supporting information, (2019/05/07)
A visible-light-promoted electron-donor-acceptor (EDA) complex-initiated [5 + 1] annulation between biguanides and perfluoroalkyl halides for the construction of perfluoroalkyl-s-triazines has been developed. It was found that both visible light and dioxygen in the air are favorable for the reaction. A radical-polar crossover mechanism was proposed, in which sequential SET, radical combination, HF elimination, electrocyclization, and aromatization are involved.
Conversion of biguanides into substituted s triazines assayable by GC or mass fragmentography
Alkalay,Volk,Bartlett
, p. 525 - 529 (2007/10/06)
Substituted s triazines were prepared by the treatment of biguanides with various organic acid anhydrides. This reaction permits the ready conversion of the hypoglycemic drugs, phenformin, buformin, and metformin and of other analogous biguanides into compounds suitable for GC and mass fragmentographic determination with a high degree of sensitivity. Mass spectral data and Kovats retention indexes are presented for all s triazines prepared for this study.