84751-70-2Relevant academic research and scientific papers
Atropisomerism in Doubly peri-Substituted 9-(2-methylbenzyl)triptycene Derivatives, 8-Chloro- and 8-Bromo-1,4-dimethyl-9-(2-methylbenzyl)triptycenes
Yamamoto, Gaku,Nemoto, Takashi,Ohashi, Yuji
, p. 1957 - 1966 (1992)
The 13C dynamic NMR study revealed that 9-(2-methylbenzyl)triptycene has an energy barrier to gear rotation of 11.8 kcal*mol-1 (1 cal=4.184 J).Introduction of substituents at two of the peri-positions was expected to raise the barrier enough fo
Correlated Rotation in 9-(2,4,6-Trimethylbenzyl)triptycenes. Direct and Roundabout Enantiomerization-Diastereomerization Processes
Yamamoto, Gaku,Oki, Michinori
, p. 1233 - 1236 (2007/10/02)
A dynamic NMR (DNMR) study on several singly peri-substituted 9-(2,4,6-trimethylbenzyl)triptycene derivatives revealed two rate processes: one exchanges the magnetic environments of the two o-methyl groups, and the other averages those of the benzylic met
