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Cover Picture: Thermal and Photolytic Transformation of NHC–B,N‐Heterocycles: Controlled Generation of Blue Fluorescent 1,3‐Azaborinine Derivatives and 1 H ‐Imidazo[1,2‐a]indoles by External Stimuli (Chem. Eur. J. 40/2015)
Author(s) -
McDonald Sean M.,
Mellerup Soren K.,
Peng Jinbao,
Yang Dengtao,
Li QuanSong,
Wang Suning
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201584001
Subject(s) - indole test , carbene , chemistry , derivative (finance) , molecule , selectivity , stereochemistry , cover (algebra) , transformation (genetics) , organic chemistry , catalysis , mechanical engineering , financial economics , engineering , economics , biochemistry , gene
The unusual and distinct pathways . of molecular transformation by N‐heterocyclic carbene‐bound B,N‐heterocycles are depicted in the cover image. S. Wang and co‐ workers show in their Full Paper on page 13961 ff. that NHC‐B,N‐heterocycles can act as a common precursor for rare 1,3‐azaborinine derivatives and imidazo[1,2‐a]indoles. The transformation of NHC‐B,N‐heterocycles to these two classes of molecules can be controlled with high selectivity by using light or heat. With light, the B,N‐heterocycle transforms to a 1,3‐azaborinine derivative, whereas with heat, it generates an imidazo[1,2‐a]indole quantitatively. The cover art was designed and produced by Yufei Li, a Ph.D. student in S. Wang’s laboratory.