Highly emissive phenylene-expanded [5]radialene

2020 ◽  
Vol 56 (27) ◽  
pp. 3911-3914 ◽  
Author(s):  
Jie Yu ◽  
Chunlin Tang ◽  
Xinggui Gu ◽  
Xiaoyan Zheng ◽  
Zhen-Qiang Yu ◽  
...  

Star: a pentagonal conjugated radialene macrocycle was one-pot synthesized for the first time. The fantastic pentagonal architecture is revealed by its single crystal structure, and affords the smallest ring strain and the best conjugation.

2006 ◽  
Vol 61 (9) ◽  
pp. 1128-1133 ◽  
Author(s):  
Ali Ramazani ◽  
Ali Reza Kazemizadeh ◽  
Ebrahim Ahmadi ◽  
Katarzyna Ślepokura ◽  
Tadeusz Lis

Abstract A one-pot synthesis of sterically congested phosphorus ylides in fairly high yields by the reaction of 2,2,6,6-tetramethyl-3,5-heptanedione, dialkyl acetylenedicarboxylates and triphenylphosphine is reported. The structures of these compounds were confirmed by IR, 1H, 31P and 13C NMR spectroscopy, and X-ray single crystal structure determination. The NMR spectra (CDCl3 as solvent) indicated that the compounds contained two rotamers for each ylide.


1999 ◽  
Vol 84 (4) ◽  
pp. 536-549 ◽  
Author(s):  
Edward S. Grew ◽  
Guenther J. Redhammer ◽  
Georg Amthauer ◽  
Mark A. Cooper ◽  
Frank C. Hawthorne ◽  
...  

1978 ◽  
Vol 49 (8) ◽  
pp. 4411-4416 ◽  
Author(s):  
H. d’Amour ◽  
D. Schiferl ◽  
W. Denner ◽  
Heinz Schulz ◽  
W. B. Holzapfel

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