期刊
CHEMICAL COMMUNICATIONS
卷 57, 期 19, 页码 2364-2367出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0cc08241d
关键词
-
资金
- National Natural Science Foundation of China [21772151, 22072111]
- Natural Science Foundation of Hubei Province [2018CFA084]
The Petasis reaction successfully synthesized alpha- and beta-butadienyl amines using (1S,2R)-1-amino-2-indanol as the substrate, demonstrating metal-free nature, broad substrate scope, complete regioselectivities, and high to excellent chirality induction. The favored nucleophilic addition across the Si-face of the imine intermediate was explained using DFT calculations of the six-membered chair-like transition state.
The Petasis reaction using (1S,2R)-1-amino-2-indanol as the substrate and an activator to construct alpha- and beta-butadienyl amines in optically pure forms was realized, which are otherwise difficult to prepare. The reactions feature a metal-free nature, broad substrate scope, complete regioselectivities (gamma-selectivity of pinacol homoallenyl- and isoprenylboronates), and high to excellent chirality induction (up to >20 : 1 dr). The favored nucleophilic addition across the Si-face of the imine intermediate was explained using DFT calculations of the six-membered chair-like transition state.
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