Chemistry is traditionally divided into organic and inorganic chemistry. The former is the study of compounds containing at least one carbon-hydrogen bonds. 3105-95-1, Name is H-HoPro-OH, molecular formula is C6H11NO2, belongs to catalyst-ligand compound, is a common compound. In a patnet, author is Hong, Seung Youn, once mentioned the new application about 3105-95-1, Quality Control of H-HoPro-OH.
Catalytic access to carbocation intermediates via nitrenoid transfer leading to allylic lactams
Carbocation intermediacy is postulated in numerous organic transformations and provides the foundation for retrosynthetic logics in chemical synthesis. Although a number of catalytic approaches are designed to generate transient carbocations under mild conditions, there is room for improvement in the context of selectivity control and synthetic utility. Here we present an approach that enables catalytic access to carbocation intermediates via metal-nitrenoid transfer into alkenes, which subsequently allows a regiocontrolled elimination reaction. Customized catalysts are capable of bypassing competing pathways of the reactive intermediates to furnish valuable allylic lactams with excellent regioselectivity. Mechanistic investigations suggest that the ligand plays a critical role as an internal base in the selectivity-determining proton transfer process. This protocol is broadly applicable for preparing both five- and the more challenging four-membered allylamides. The virtue of this platform is further demonstrated by achieving the enantioselective construction of gamma-lactams.
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Reference:
Metal catalyst and ligand design,
,Ligand Template Strategies for Catalyst Encapsulation – NCBI