Zobrazeno 1 - 10
of 25 863
pro vyhledávání: '"ASYMMETRIC CATALYSIS"'
Publikováno v:
Green Synthesis and Catalysis, Vol 5, Iss 4, Pp 282-289 (2024)
The construction of chiral quaternary carbon stereocenters is a significant challenge in asymmetric synthesis. Catalytic synthesis of these structures with trisubstituted allylic alcohols is highly important. However, most of the reported methodologi
Externí odkaz:
https://doaj.org/article/5e6686a550d3405fbd39bdeedeb77767
Publikováno v:
Green Synthesis and Catalysis, Vol 5, Iss 4, Pp 270-276 (2024)
Allenes are a class of unsaturated compounds containing a propadiene structural moiety, exhibiting essential physiological, pharmacological, and various reactivities. Their (4 + 3) cycloaddition reaction has become an effective method for synth
Externí odkaz:
https://doaj.org/article/ec2a153e5f8a4f6d9848c78b1bcea55f
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 2668-2681 (2024)
Carbon capture and utilisation (CCU) technologies offer a compelling strategy to mitigate rising atmospheric carbon dioxide levels. Despite extensive research on the CO2 insertion into epoxides to form cyclic carbonates, the stereochemical implicatio
Externí odkaz:
https://doaj.org/article/01e77f74d13b4f85966adce1c834d516
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 2313-2322 (2024)
The study presents a novel approach utilizing iminium salt activation and mild enolization of thioesters, offering an efficient and rapid synthesis of Michael adducts with promising stereoselectivity and marking a significant advancement in mechanoca
Externí odkaz:
https://doaj.org/article/4c30cb9d200547a8b14b63957bba5d12
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 2349-2377 (2024)
In recent decades, the chiral allylation of imines emerged as a key methodology in the synthesis of alkaloids and natural products with 4-, 5- and 6-membered cyclic amine motifs. Initially reliant on stoichiometric reagents, synthetic chemists predom
Externí odkaz:
https://doaj.org/article/c8c850cfb1cb47cc840f04aa5f17aa0b
Autor:
Maciej Dajek, Mikołaj J. Janicki, Paulina D. Kubiak, Julia Bąkowicz, Błażej Dziuk, Rafał Kowalczyk
Publikováno v:
Tetrahedron Chem, Vol 12, Iss , Pp 100092- (2024)
The use of thioesters as nucleophiles marks a considerable change in organic synthesis. This new method, propelled by gentle enolization with minimal catalyst loading, results in enantiomeric excesses surpassing 95 % under ambient conditions, accompl
Externí odkaz:
https://doaj.org/article/cb2756d86bd4409c9023dbdcbb230f42
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 1794-1799 (2024)
Enantioselective halolactonizations of sterically less hindered alkenoic acid substrates without substituents on the carbon–carbon double bond have remained a formidable challenge. To address this limitation, we report herein the asymmetric bromola
Externí odkaz:
https://doaj.org/article/0d7d1923cde544ed88840e116616e919
Publikováno v:
Green Synthesis and Catalysis, Vol 5, Iss 2, Pp 102-107 (2024)
Heterogeneous asymmetric catalysis is an important strategy for the industrial production of chiral compounds. Herein, we reported a polymer-bound Xu-Phos-derived palladium catalyst that shows good performance in heterogeneous asymmetric reductive He
Externí odkaz:
https://doaj.org/article/cb138307d75f4de28cbaa3c2f348d02f
Publikováno v:
Advanced Science, Vol 11, Iss 40, Pp n/a-n/a (2024)
Abstract Heteroaromatic N‐oxides, renowned for their highly polar N─O bond and robust structure, exhibit significant bioactivities and have played a pivotal role in various drug development projects since the discovery of Minoxidil. Moreover, het
Externí odkaz:
https://doaj.org/article/b7c626486f754ce4b634582b60e09e2d
Publikováno v:
Advanced Science, Vol 11, Iss 40, Pp n/a-n/a (2024)
Abstract Carbopalladation‐initiated cascade reaction involving 1,4‐Pd migration is a straightforward and powerful approach to activate remote C─H bond, forging versatile fused polycyclic compounds containing fluorene fragment which are highly v
Externí odkaz:
https://doaj.org/article/248bf094bf694a56bdaa70def05fda6f