Highly enantioselective synthesis of silahelicenes using Ir-catalyzed [2+2+2] cycloaddition |
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| Authors: | Shibata Takanori Uchiyama Toshifumi Yoshinami Yusuke Takayasu Satoshi Tsuchikama Kyoji Endo Kohei |
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| Affiliation: | Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, Shinjuku, Tokyo, 169-8555, Japan. tshibata@waseda.jp |
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| Abstract: | Silahelicenes, which contain two silole moieties in a helically chiral structure, were synthesized by a chiral Ir-catalyzed intermolecular [2+2+2] cycloaddition of tetraynes with diynes along with a Ni-mediated intramolecular [2+2+2] cycloaddition. The photophysical properties of the obtained highly enantiomerically enriched silahelicenes (up to 93% ee) were also measured. |
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