Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 46, Pages 20475-20479Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202009781
Keywords
asymmetric synthesis; chirality; heterocycles; macrocycles; rhodium
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Funding
- MEXT [20H02739]
- Asahi Glass Foundation
- JST-ERATO [JPMJER1903]
- JSPS-WPI
- JSPS
- Grants-in-Aid for Scientific Research [20H02739] Funding Source: KAKEN
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An chiral Rh-II-catalyzed cyclooligomerization reaction of thiophenes having triazolyl and vinyl substituents at the 2- and 4-positions was studied. Structurally interesting cyclic trimers, having chirality that is ascribed only to the orientation of the 2,4-disubstituted thiophene rings, are obtained. The 2,4-disubstitution of the starting thiophene monomer allows production of each of the enantiomers. The observed electronic circular-dichroism spectra are in accord with those simulated by density-functional theory calculations.
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