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- Title
Regio‐ and Stereoselective Carbon‐Boron Bond Formation via Heterogeneous Palladium‐Catalyzed Hydroboration of Enallenes.
- Authors
Ramesh Naidu, Veluru; Rafi, Abdolrahim A.; Tai, Cheuk‐Wai; Bäckvall, Jan‐E.; Córdova, Armando
- Abstract
A highly efficient regio‐ and stereoselective heterogeneous palladium‐catalyzed hydroboration reaction of enallenes was developed. Nanopalladium immobilized on microcrystalline cellulose (MCC) was successfully employed as an efficient catalyst for the enallene hydroboration reaction. The nanopalladium particles were shown by HAADF‐STEM to have an average size of 2.4 nm. The cellulose‐supported palladium catalyst exhibits high stability and provides vinyl boron products in good to high isolated yields (up to 90 %). The nanopalladium catalyst can be efficiently recycled and it was demonstrated that the catalyst can be used in 7 runs with a maintained high yield (>80 %). The vinylboron compounds prepared from enallenes are important synthetic intermediates that can be used in various organic synthetic transformations.
- Subjects
HYDROBORATION; PALLADIUM catalysts; HETEROGENEOUS catalysis; CELLULOSE
- Publication
Chemistry - A European Journal, 2023, Vol 29, Issue 24, p1
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.202203950