Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
ISSN-L : 0009-2363
Special Collection of Papers: Regular Articles
Substituent Effect at the C4-Position of 1,3a,6a-Triazapentalene
Atsushi NakayamaSatoshi NishioAkira OtaniAkane MeraAyumi OsawaKeiji TaninoKosuke Namba
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2016 Volume 64 Issue 7 Pages 830-837

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Abstract

Various 2,4-disubstituted-1,3a,6a-triazapentalenes possessing methyl and phenyl groups at the C4-position were synthesized. Fluorescence observation of the synthetic 4-methyl- and 4-phenyl-1,3a,6a-triazapentalenes revealed that the introduction of a substituent at the C4-position allowed a long-wavelength shift of the fluorescence maximum. Furthermore, the phenyl group at the C4-position was found to induce a substantial increase in the extinction coefficient value.

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© 2016 The Pharmaceutical Society of Japan
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