ISSN:
0009-2940
Keywords:
Hagihara coupling
;
Alkynes
;
Anthracenes
;
Molecular tweezers
;
Nanoscale molecules
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Tweezer-Shaped Hydrocarbons1,8-Bis[(arylethynyl)phenyl]- and -[(arylethenyl)phenyl]anthracenes of type I (e.g. 9, 6a) and 1,8-bis{[(arylethynyl)phenyl]-ethynyl}- and -{[(arylethenyl)phenyl]ethynyl}anthracenes of type II (e.g. 16, 13) were synthesized for the first time. Their hydrocarbon framework is formed by Grignard coupling and by Hagihara coupling, respectively. An X-ray analysis of 13 exhibits an approximate planar skeleton, only one aromatic ring showing a considerable deviation from that plane (Figure 2). The UV and fluorescence properties are discussed. In spite of their preorganized and rather rigid tweezer-shape the new hydrocarbons do not seem to use their multiple bonds for the cooperative binding of transition metal cations.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19921250922
