Substituent-Controlled Regioselective Photoinduced Cyclization of N-Allylbenzamides with N-Sulfonylaminopyridinium Salts.
Sign Up to like & getrecommendations! Published in 2023 at "Organic letters"
DOI: 10.1021/acs.orglett.2c04190
Abstract: The annulation reactions of N-allylbenzamides with N-sulfonylaminopyridinium salts were developed under metal-free photoinduced mild conditions. Substituent-controlled sulfonaminoarylation and sulfonaminooxylation of benzamides were realized: N-allylbenzamides lead to benzosultams, while N-(2-phenylallyl)benzamides give sulfonamidylated oxazoline derivatives. Control experiments… read more here.
Keywords: controlled regioselective; substituent controlled; sulfonylaminopyridinium salts; allylbenzamides sulfonylaminopyridinium ... See more keywords
Catalyst-Controlled Regioselective Acylation of β-Ketoesters with α-Diazo Ketones Induced by Visible Light.
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DOI: 10.1021/acs.orglett.8b03189
Abstract: A catalyst-controlled acylation reaction of β-ketoesters was developed for the first time by combining visible-light photoactivation with Lewis acid or base catalysis. By employing a NiCl2·glyme complex with a bis(oxazoline) ligand as the Lewis acid… read more here.
Keywords: catalyst controlled; regioselective acylation; visible light; acylation ... See more keywords
Studies of Catalyst-Controlled Regioselective Acetalization and Its Application to Single-Pot Synthesis of Differentially Protected Saccharides.
Sign Up to like & getrecommendations! Published in 2021 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.1c08448
Abstract: This article describes studies on the regioselective acetal protection of monosaccharide-based diols using chiral phosphoric acids (CPAs) and their immobilized polymeric variants, (R)-Ad-TRIP-PS and (S)-SPINOL-PS, as the catalysts. These catalyst-controlled regioselective acetalizations were found to… read more here.
Keywords: catalyst controlled; single pot; differentially protected; studies catalyst ... See more keywords
Supramolecular-controlled regioselective photochemical [4 + 4] cycloaddition within Cp*Rh-based metallarectangles.
Sign Up to like & getrecommendations! Published in 2022 at "Dalton transactions"
DOI: 10.1039/d2dt01094a
Abstract: Photochemical reactions are vital synthetic means for the synthesis of natural products and highly strained molecules. However, it remains an immense challenge to control the chemo- and regioselectivity in the photoreactions of anthracene derivatives while… read more here.
Keywords: controlled regioselective; regioselective photochemical; photochemical cycloaddition; cycloaddition within ... See more keywords