1040140-83-7Relevant academic research and scientific papers
Asymmetric synthesis of a chiral buckybowl, trimethylsumanene
Higashibayashi, Shuhei,Sakurai, Hidehiro
, p. 8592 - 8593 (2008)
The first asymmetric synthesis of a chiral buckybowl, a C3 symmetric (C)-8,13,18-trimethylsumanene (1), was achieved by employing a synthetic strategy that translates chirality at sp3 centers into bowl chirality. The synthesis features a syn selective cyclotrimerization of an enantiopure halonorbornene derivative, tandem ring-opening/closing olefin metathesis reactions, and DDQ oxidation at low temperature. The bowl-to-bowl inversion energy of 1 was determined as 21.6 kcal/mol by circular dichroism spectra measurement. Copyright
Preparation of C3-symmetric homochiral syn-trisnorbornabenzenes through regioselective cyclotrimerization of enantiopure iodonorbornenes
Reza, A. F. G. Masud,Higashibayashi, Shuhei,Sakurai, Hidehiro
scheme or table, p. 1329 - 1337 (2010/04/23)
C3-symmetric homochiral (-)-syn-trisoxonorbornabenzene 1 possessing a rigid cup-shaped structure was synthesized through a novel regioselective cyclotrimerization of enantiopure iodonorbornenes catalyzed by palladium nanoclusters. The yield of
