Photochemistry of pyrimidin-2(1H)-ones: intermolecular hydrogen abstraction by an imino group nitrogen
作者:Takehiko Nishio、Yoshimori Omote
DOI:10.1039/p19880000957
日期:——
6-diarylpyrimidin-2(1H)-ones (1a–c) in the presence of hydrogen donors such as acyclic or cyclic ethers (2a–d), sulphides (2e–g), and xanthene (2h) gave the C–C bonded 1:1 adducts (3)–(16) of (1) and (2), via intermolecular hydrogen atom abstraction of the excited imino nitrogen of the starting pyrimidin-2(1H)-one (1). In contrast, irradiation of 1-aryl-4,6-dialkylpyrimidin-2(1H)-one (1d) in the presence
Photochemical reactions of 1-methyl-4,6-diaryl-2(1<i>H</i>)-pyrimidinones in the presence of thiols
作者:Takehiko Nishio、Michiyo Kato
DOI:10.1002/jhet.5570340122
日期:1997.1
Photochemicalreactions of 1-methyl-4,6-diaryl-2(1H)pyrimidinones 1a-b in the presence of thiols 2 are described. Irradiation of 1-methyl-4,6-diaryl-2(1H)-pyrimidinones 1a-b in benzene in the presence of thiols 2 gave the unexpected 2:1-adducts, 3-methyl-4,6-diaryl-5-aralkylthio-6-(1′-methyl-4′,6′-diaryldihydro-pyrimidin-2-on)yl-1,3-diazabicyclo[2.2.0]hexan-2-ones 3-6, of 1 and 2, whereas irradiation