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ORGANIC LETTERS
卷 16, 期 15, 页码 3994-3997出版社
AMER CHEMICAL SOC
DOI: 10.1021/ol501822c
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- DST, New Delhi
- UGC, New Delhi
The first example of an azepine ring formation by counterintuitive nucleophilic participation of DBU was observed at the sterically crowded bay area of electron-deficient perylenebisimide (PBI). This is also a rare example of the formation of a seven-membered ring via two consecutive C-N bond formations in a single step. Azepino-PBIs reveal panchromatic absorption covering the whole visible region. Further novelty of these PBIs lies within the fact that their photophysical characteristics can easily be modulated by suitable substituents.
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