| Literature DB >> 16805561 |
Shin A Moteki1, Di Wu, Kusum L Chandra, D Sahadeva Reddy, James M Takacs.
Abstract
[reaction: see text] Two simple TADDOL-derived monodentate ligands, the (1R,2S)-2-phenylcyclohexanol-derived phosphite and the N,N-(phenylbenzyl)phosphoramidite, give comparably high levels of enantioselectivity (90-96% ee) in the rhodium-catalyzed hydroborations of substituted styrenes bearing either electron-donating or electron-withdrawing substituents. Rhodium(I) chloride and tetrafluoroborate catalyst precursors give comparable results. Pinacolborane is superior to catecholborane in these reactions.Entities:
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Year: 2006 PMID： 16805561 DOI： 10.1021/ol061117g
Source DB: PubMed Journal: Org Lett ISSN： 1523-7052 Impact factor: 6.005