97382-45-1Relevant academic research and scientific papers
PHOTOOXYGENATION OF PTERIDIN-2,4,7-TRIONES
Nishio, Takehiko,Nishiyama, Tadashi,Omote, Yoshimori
, p. 2979 - 2990 (2007/10/02)
The pteridin-2,4,7-trione 6,8'-endoperoxides are synthesized and their thermal reactions are examined.The pteridin-2,4,7-triones (1) reacted smoothly with singlet oxygen to yield the pteridin-2,4,7-trione 6,8'-endoperoxides (2-5).On warming the endoperoxide (2a) reverted to the starting pteridin-2,4,7-trione (1a) with liberation of singlet oxygen, which was confirmed by trapping experiment using typical singlet oxygen acceptors (7-12).
SYNTHESIS OF STABLE 3,6-EPIDIOXYPYRAZIN-2-ONES AND α-OXO IMIDES BY PHOTOOXYGENATION OF PYRAZIN-2-ONES WITH SINGLET OXYGEN
Nishio, Takehiko,Tokunaga, Naoko (nee Nakajima),Kondo, Masaji,Omote, Yoshimori
, p. 2921 - 2926 (2007/10/02)
Irradiation of the pyrazin-2-ones (1) in methanol under oxygen gave the 3,6-epidioxypyrazin-2-ones (2), the N-alkyl-N-acyl-α-oxo-amides (3), and the unusual products, N-alkyl-α-acyloxy-α-methoxy amides (4).The mechanism for the formation of these photoproducts is discussed.Furthermore, thermal or photochemical treatment of the 3,6-epidioxypyrazinones (2), which could be readily obtained by the reaction of (1) and singlet oxygen, gave the N-alkyl-N-acyl-α-oxo amides (3) and this reaction would provide a useful synthetic method for the α-oxo imides (3).
NEW AND STABLE ENDOPEROXIDE FROM THE PTERIDIN-2,4,7-TRIONE AND SINGLET OXYGEN
Nishio, Takehiko,Nishiyama, Tadashi,Omote, Yoshimori
, p. 5637 - 5640 (2007/10/02)
1,3,8-Trimethyl-6-phenylpteridin-2,4,7-trione (1) reacted with singlet oxygen to give the pteridin-2,4,7-trione 6,8'-endoperoxide (2), which on warming generates singlet oxygen.Generation of singlet oxygen from thermolysis of the endoperoxide (2) was confirmed by trapping experiments using typical singlet oxygen acceptors.
