Bulletin of the Chemical Society of Japan p. 1957 - 1966 (1992)
Update date:2022-08-03
Topics:
Yamamoto, Gaku
Nemoto, Takashi
Ohashi, Yuji
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
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