期刊
SYNTHESIS-STUTTGART
卷 44, 期 21, 页码 3269-3284出版社
GEORG THIEME VERLAG KG
DOI: 10.1055/s-0032-1316793
关键词
polyphenylenes; axial chirality; cycloaddition; asymmetric synthesis; chiral catalysts; rhodium
资金
- Ministry of Education, Culture, Sports, Science and Technology, Japan [22350046]
- Global COE program 'Center for Practice Chemical Wisdom' by MEXT
- Grants-in-Aid for Scientific Research [22350046] Funding Source: KAKEN
Consecutive inter-and intramolecular [2+2+2] cycloadditions of various phenylene-tethered triynes were comprehensively studied by using chiral rhodium catalysts. ortho-Phenylene-tethered triynes gave chiral o,o,o,o-tetraphenylenes in high-to-excellent enantiomeric excess as dimers. meta-Phenylene-tethered triynes gave chiral o,m,o,m-tetraphenylenes in moderate enantiomeric excess as dimers along with hexaphenylenes as trimers. This is the first synthesis of cis-o,m,o,m-tetraphenylenes; one structure was ascertained by X-ray crystal structure analysis. para-Phenylene-tethered triynes gave o,p,o,p,o,p-hexaphenylenes as trimers along with the formation of o,p,o,p,o,p,o,p-octaphenylenes as tetramers. 1 Introduction 2 Results and Discussion 2.1 ortho-Phenylene-Tethered Triynes 2.2 Naphthylene-Tethered Triynes 2.3 meta-Phenylene-Tethered Triynes 2.4 para-Phenylene-Tethered Triynes 3 Conclusion
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