108429-58-9Relevant academic research and scientific papers
Di- tert-butyl Peroxide-Mediated Radical C(sp2/sp3)-S Bond Cleavage and Group-Transfer Cyclization
Luo, Kai,Yang, Wen-Chao,Wei, Kai,Liu, Yue,Wang, Jun-Ke,Wu, Lei
, p. 7851 - 7856 (2019/10/11)
A novel strategy of cascade radical C(sp2/sp3)-S bond cleavage and group-transfer cyclization is disclosed. Triggered by alkyl radicals, varieties of 2-isocyanoaryl thioethers containing aliphatic, aryl, and heteroaromatic groups can be cleaved and precisely reinstalled to give benzothiazole derivatives. Mechanistic studies reveal that the cascade reaction undertakes an intermolecular pathway, and the inner radical sources (R radicals) exhibit high priority over those of methyl radical origin from di-tert-butyl peroxide.
DECOMPOSITION OF ARYLAZIDES BY THF/n-BUTYLLITHIUM-II- -ISOLATION OF 1-ARYL-4,5-DIHYDRO-5-HYDROXY-1H-1,2,3-TRIAZOLES
Nunno, L. Di,Scilimati, A.
, p. 3913 - 3920 (2007/10/02)
By reaction of arylazides having no electron-withdrawing groups with the enolate ion of the acetaldehyde (formed by cycloreversion of THF in the presence of n-buthyllithium), 1-aryl-4,5-dihydro-5-hydroxy-1H-1,2,3-triazoles could be isolated and then characterized.Further reaction of such hydroxytriazolines with the same enolate ion afforded substantial amounts of the corresponding N-formylanilines , confirming their intermediacy in the previously reported decomposition of arylazides by THF/n-butyllithium.On the other hand, using alkoxides as bases, the preferred scheme of conversion of the hydroxytriazolines was found to be the known dehydration to 1-aryl-1H-1,2,3-triazoles.
