On September 4, 2020, Li, Jing; Han, Xiao-Ni; Zhou, He-Ye; Han, Ying; Chen, Chuan-Feng published an article.Recommanded Product: 150-78-7 The title of the article was Helic[1]triptycene[3]arene: Synthesis, Complexation, and Formation of [2]Rotaxane Shuttle. And the article contained the following:
A new macrocyclic arene, helic[1]triptycene[3]arene H, was conveniently synthesized in 37% yield by a one-pot reaction starting from 2,6-dimethoxyl-3,7-dihydroxymethyltriptycene. Macrocycle H showed fixed conformation in solution and could form 1:1 complexes with a series of neutral guests, secondary ammonium salts, and tertiary ammonium salts in both solution and solid states. The association constants between H and the neutral guests were between (1.23 ± 0.10) x 102 and (4.70 ± 0.47) x 103 M-1, while the association constants between H and the ammonium guests were between (1.35 ± 0.12) x 103 and (1.59 ± 0.14) x 105 M-1. Moreover, H showed bigger association constants with secondary ammonium salts than those with tertiary ammonium salts possibly because of the steric hindrance effect and multiple intermol. interactions. The stimuli-responsive complexation between H and the ammonium salts could be controlled by the addition and removal of acids and bases as well. Based on the host-guest complexation between H and the secondary ammonium salt, [2]rotaxane was further synthesized, and its shuttling motion could be efficiently controlled by an acid and base. The experimental process involved the reaction of 1,4-Dimethoxybenzene(cas: 150-78-7).Recommanded Product: 150-78-7
The Article related to helic triptycenearene preparation guest binding rotaxane shuttle, Physical Organic Chemistry: Other Reactions, Processes, and Spectra and other aspects.Recommanded Product: 150-78-7
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