Bowl-shaped phosphine molecules, whose bowl geometry can be controlled by a variation of the axial substituent, were synthesized, and used as host molecules to encapsulate C60. Host molecules with relatively shallow bowls formed a chiral capsule, while hosts with deeper bowls formed an achiral pseudo-cage.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1039/c5cc04194e | DOI Listing |
Angew Chem Int Ed Engl
March 2021
Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland.
C-H activation-based ring-forming methods are a powerful approach for the construction of complex molecular architectures, especially those containing a congested stereocenter. Therefore, this strategy seems perfectly suited to address the synthesis of chiral polycyclic aromatic hydrocarbons (PAHs) and bowl-shaped molecules, which are important target molecules in the field of organic electronic materials. Herein, we describe an enantioselective Pd -catalyzed C(sp )-H arylation protocol for the synthesis of chiral fluoradenes and other warped molecules, which could serve to the bottom-up construction of chiral PAHs.
View Article and Find Full Text PDFChem Rec
October 2016
Department of Energy and Hydrocarbon chemistry Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan.
This review summarizes transformations using copper hydride (Cu-H), boryl copper (Cu-B) or silyl copper (Cu-Si) as active catalyst species. Semihydrogenation, hydroboration, and hydrocarboxylation have been developed using Cu-H as active catalyst species. Preferential reduction of sterically hindered ketones is accompanied by Cu-H species bearing a bowl-shaped phosphine as a crucial ligand.
View Article and Find Full Text PDFChem Commun (Camb)
August 2015
Graduate School of Pure and Applied Sciences and Tsukuba Research Center for Interdisciplinary Materials Science (TIMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8571 Japan.
Bowl-shaped phosphine molecules, whose bowl geometry can be controlled by a variation of the axial substituent, were synthesized, and used as host molecules to encapsulate C60. Host molecules with relatively shallow bowls formed a chiral capsule, while hosts with deeper bowls formed an achiral pseudo-cage.
View Article and Find Full Text PDFOrg Lett
January 2007
Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, CREST, Japan Science and Technology Agency (JST), Kyoto 615-8510, Japan.
[reaction: see text] Bowl-shaped phosphine ligands were found to be highly effective in Suzuki-Miyaura coupling of unactivated aryl chlorides, in which the depth of the bowl affected the catalytic activity considerably.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
October 2005
Institute of Chemistry: Metalorganics and Inorganic Materials, Technical University of Berlin, Strasse des 17. Juni 135, Sekr. C2, 10623 Berlin, Germany.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!