Photochemical properties and the structure of 6-methyl-2,4-diphenyl-1-( p-tolyl)pyrimidinium perchlorate and the product of its photocyclization.

Autor: Makarova, N., Knyazhanskii, M., Filipenko, O., Bulgarevich, D., Kharlanov, V., Borodaev, S., Aldoshin, S.
Zdroj: Russian Chemical Bulletin; 1995, Vol. 44 Issue 9, p1662-1666, 5p
Abstrakt: The structure and photochemical properties of 6-methyl-2,4-diphenyl-1-( p-tolyl)pyrimidinium perchlorate ( 1) and 4,8-dimethyl-2-phenylpyrimido[1,2- f]phenanthridinium ( 2) formed as a result of photocyclization of 1 have been studied. The crystal structure of compound 1 has been studied at −140 °C and 25 °C. In cation 1, the N-tolyl substituent and α-Ph ring are noncoplanar with the pyrimidinium fragment (the angles are 67.9° and 41.1°, respectively), while the angle between the γ-Ph ring and the pyrimidinium moiety is only 7.1° (−140 °C). The photocyclization product 2 has a flattened structure. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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