1563228-06-7Relevant academic research and scientific papers
A complete gear system in N-benzoyl-carbazole derivatives
Tabata, Hidetsugu,Kayama, Susumu,Takahashi, Yuka,Tani, Norihiko,Wakamatsu, Shintaro,Tasaka, Tomohiko,Oshitari, Tetsuta,Natsugari, Hideaki,Takahashi, Hideyo
, p. 1514 - 1517 (2014)
2′,6′-Disubstituted N-benzoylated carbazole derivatives were found to exhibit atropisomerism. The bulky substituents restricted rotation about the N-C7′ and C7′-C1′ bonds to separate four atropisomers, in which rotation about the C7′-C1′ bond was in perfect concert with rotation about the N-C7′ bond. Complete geared rotation without slippage at 37 C for 7 days was observed for the first time. Conformational analysis clarified the preference for the gear system over other internal conversion pathways.
