Synthesis of isomeric (E)-[4-(dimethylamino)phenyl]-vinylquinoxalines – precursors for a new class of nonlinear optical chromophores
Sign Up to like & getrecommendations! Published in 2017 at "Chemistry of Heterocyclic Compounds"
DOI: 10.1007/s10593-017-2084-y
Abstract: Methods are presented for the preparation of isomeric (Е)-3-, (Е)-6-, (Е)-7-[4-(dimethylamino)phenylethenyl]quinoxalin-2-ones and 2-phenylquinoxalines – compounds of “donor–π-bridge” type, which serve as precursors for new nonlinear optical chromophores with potentially high first hyperpolarizability values. The introduction… read more here.
Keywords: precursors new; synthesis isomeric; optical chromophores; isomeric dimethylamino ... See more keywords
Use of Hypervalent Iodine in the Synthesis of Isomeric Dihydrooxazoles
Sign Up to like & getrecommendations! Published in 2018 at "Chemistry of Heterocyclic Compounds"
DOI: 10.1007/s10593-018-2288-9
Abstract: A convenient synthesis of 2- and/or 3-oxazolines has been developed depending on the structure and stereochemistry of the starting amino alcohol. PhI(OAc)2 acted as oxidant on the intermediate imine, as supported by NMR investigation. The… read more here.
Keywords: use hypervalent; hypervalent iodine; isomeric dihydrooxazoles; synthesis isomeric ... See more keywords
Tunable Key [3 + 2] and [2 + 1] Cycloaddition of Enaminones and α-Diazo Compounds for the Synthesis of Isomeric Isoxazoles: Metal-Controlled Selectivity.
Sign Up to like & getrecommendations! Published in 2023 at "Organic letters"
DOI: 10.1021/acs.orglett.3c00636
Abstract: The three-component reactions of enaminones, α-diazo esters/ketones, and t-butyl nitrite (TBN) for the switchable synthesis of isomeric isoxazoles have been realized. The catalysis with Cu(II) salt provides 3,4-disubsituted isoxazoles via [3 + 2] cycloaddition. On… read more here.
Keywords: key cycloaddition; synthesis isomeric; enaminones diazo; isomeric isoxazoles ... See more keywords
Synthesis of Isomeric 3-Benzazecines Decorated with Endocyclic Allene Moiety and Exocyclic Conjugated Double Bond and Evaluation of Their Anticholinesterase Activity
Sign Up to like & getrecommendations! Published in 2022 at "Molecules"
DOI: 10.3390/molecules27196276
Abstract: Transformations of 1-methoxymethylethynyl substituted isoquinolines triggered by terminal alkynes in alcohols were studied and new 3-benzazecine-containing compounds synthesized, such as 6-methoxymethyl-3-benzazecines incorporating an endocyclic C6–C8 allene fragment and the -ylidene derivatives 6-methoxymethylene-3-benzazecines. The reaction mechanisms… read more here.
Keywords: synthesis isomeric; isomeric benzazecines; decorated endocyclic; allene moiety ... See more keywords