75276-64-1Relevant academic research and scientific papers
INTRODUCTION OF SELENIUM TO HETEROCYCLIC COMPOUNDS. PART V. SYNTHESIS PF 2-PYRIMIDINESELENONES FROM 2-PYRIMIDINETHIONES
Korohoda, Maria Jolanta,Slomska, Elzbieta,Szczurek, Halina
, p. 165 - 171 (2007/10/02)
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.
Restricted Rotation about the Carbon-Nitrogen Single Bond of 1-Aryl-4,6-dimethylpyridinium-2(1H)-ones and the Corresponding Thiones
Kashima, Choji,Katoh, Akira
, p. 1599 - 1602 (2007/10/02)
By recrystallizing the salts (3) and (4) with D-camphor-10-sulphonic acid, the rotational isomers due to restricted rotation about the carbon-nitrogen single bond in ortho-substituted-1-aryl-4,6-dimethylpyrimidin-2(1H)-ones (1) and the corresponding thion
