- INTRODUCTION OF SELENIUM TO HETEROCYCLIC COMPOUNDS. PART V. SYNTHESIS PF 2-PYRIMIDINESELENONES FROM 2-PYRIMIDINETHIONES
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The earlier described method of introduction of selenium to the five-membered heterocyclic ring was applied to synthesize the six-membered heterocyclic ring containing an exocyclic atom of selenium.Ten new derivatives of 2-pyrimidineselenone have been obtained from methylation products of appropriate derivatives of 2-pyrimidinethione treated with the HSe- ion.The structure of the obtained compounds has been confirmed by spectral data.The contribution of and bond vibrations in the IR spectrum is discussed.
- Korohoda, Maria Jolanta,Slomska, Elzbieta,Szczurek, Halina
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p. 165 - 171
(2007/10/02)
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- AN IMPROVED CONVERSION OF 1,4,6-TRISUBSTITUTED 2(1H)-PYRIMIDINONES INTO THE CORRESPONDING THIONES
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1,4,6-Trisubstituted 2(1H)-pyrimidinones (2a-j) are easily converted into the corresponding thiones (3a-j) in high yields by reacting with 2,4-bis(p-methoxyphenyl)-1,3,2,4-dithiadiphosphetane-2,4-disulfide (1).Further, other diazines, e.g., 2-methyl-6-phe
- Katoh, Akira,Kashima, Choji,Omote, Yoshimori
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p. 2283 - 2286
(2007/10/02)
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