| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5286603 | Tetrahedron Letters | 2007 | 5 Pages |
Abstract
The title azaazulene 3 was synthesized either by reaction of tropone with N-{(2-pyridyl)acetyl}pyridinium iodide in the presence of ammonium acetate or by palladium-catalyzed cross-coupling between 2-halo-1-azaazulene and 2-substituted pyridine. The compound shows relatively stronger basicity compared with 2,2â²-bipyridyl. While 3 showed no emission from the S1 state but from the S2 state like azulene does, the protonated species of 3 exhibited emission from the S1 state. Cationic metal-dependent absorption and emission relating to complexation were also studied.
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Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Mitsunori Oda, Kazutaka Ogura, Nguyen Chung Thanh, Sayaka Kishi, Shigeyasu Kuroda, Kunihide Fujimori, Tomonori Noda, Noritaka Abe,