65183-57-5Relevant academic research and scientific papers
Ring closure reactions of β-nitroso-, β-acyl-, and β-thiocarbamoyl-α,β-unsaturated sulfilimines. Synthesis of [1,2,5]oxadiazolo[3,4-d]-, isoxazolo[3,4-d]-, and isothiazolo[3,4-d]pyrimidine derivatives from uracils
Matsumoto, Nobuaki,Takahashi, Masahiko
, p. 10073 - 10079 (2007/10/03)
1,3-Dialkyl-6-chlorouracils were treated with S,S-diphenylsulfilimine to give N-(1,3-dialkyluracil-6-yl)-S,S-diphenylsulfilimines. The uracilylsulfilimines were nitrosated, acylated, or thiocarbamoylated to give N-(5-nitroso-, 5-acyl-, or 5-thiocarbamoyluracil-6-yl)sulfilimines, respectively. These conjugated sulfilimines were cyclized by thermolysis or photolysis to [1,2,5]oxadiazolo[3,4-d], isoxazolo[3,4-d], or isothiazolo[3,4-d]pyrimidine derivatives.
A new synthesis of pyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-diones by oxidative N-N bond formation of 6-amino-5-(N-aryliminomethyl)uracils using iodobenzene diacetate
Sajiki, Hironao,Hattori, Kazuyuki,Sako, Magoichi,Hirota, Kosaku
, p. 1409 - 1410 (2007/10/03)
The intramolecular cyclizations of 6-amino-5-(N-aryliminomethyl)-1,3-dimethyluracils (2) involving the N-N bond formation were effected via a hypervalent iodine oxidation using iodobenzene diacetate. This method enabled a facile synthesis of 2-aryl-5,7-di
Pyrimidine Derivatives and Related Compounds. XLVI. Thermal and Photochemical Transformation of 5-Substituted 6-Azido-1,3-dimethyluracils into Fused Pyrimidines such as Isoxazolopyrimidines, Pyrazolo-pyrimidines, and Pyrimido-t
Hirota, Kosaku,Maruhashi, Kazuo,Asao, Tetsuji,Kitamura, Norihiko,Maki, Yoshifumi,Senda, Shigeo
, p. 3959 - 3966 (2007/10/02)
Thermolysis and photolysis of 6-azido-1,3-dimethyluracils possessing certain substituents (formyl, benzoyl, hydrazonomethyl, phenyl, and benzyl groups) at the 5-position provided new methods for the preparation of fused pyrimidines.Irradiation and heating
