Zobrazeno 1 - 10
of 6 934
pro vyhledávání: '"cyclizations"'
Publikováno v:
SynOpen, Vol 08, Iss 04, Pp 273-299 (2024)
Externí odkaz:
https://doaj.org/article/48b0b7e08bf943f890795eef2f8cef5f
Autor:
Peter Langer
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 1256-1269 (2024)
Domino reactions of chromones with activated carbonyl compounds, such as dimethyl acetone-1,3-dicarboxylate and 1,3-diphenylacetone, and with 1,3-bis(silyloxy)-1,3-butadienes, electroneutral equivalents of 1,3-dicarbonyl dianions, allow for a conveni
Externí odkaz:
https://doaj.org/article/9ac0d5db2af14140805471b652643650
Autor:
M. Ángeles Gutiérrez López, Mei-Ling Tan, Giacomo Renno, Augustina Jozeliūnaitė, J. Jonathan Nué-Martinez, Javier Lopez-Andarias, Naomi Sakai, Stefan Matile
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 19, Iss 1, Pp 1881-1894 (2023)
Anion–π catalysis, introduced in 2013, stands for the stabilization of anionic transition states on π-acidic aromatic surfaces. Anion–π catalysis on carbon allotropes is particularly attractive because high polarizability promises access to re
Externí odkaz:
https://doaj.org/article/eafc07211bd44098804d87ded7bcb476
Autor:
John Kornfeind, Fraser F. Fleming
Publikováno v:
Tetrahedron Chem, Vol 9, Iss , Pp 100056- (2024)
The protonation, or Lewis Acid complexation, of electrophiles can trigger the sequential insertion of two or more isocyanides resulting in valuable iminonitriles or heterocycles. The number of insertions is controlled by the nature of the alkyl- or a
Externí odkaz:
https://doaj.org/article/7a09947523624fd4bb1143f4f0f8d4bb
Publikováno v:
Molecules, Vol 29, Iss 10, p 2353 (2024)
Quinazolines are an important class of heterocyclic compounds that have proven their significance, especially in the field of organic synthesis and medicinal chemistry because of their wide range of biological and pharmacological properties. Thus, nu
Externí odkaz:
https://doaj.org/article/fe0e1c141f034dbd9e2c88b75375896d
Autor:
Vyacheslav Y. Sosnovskikh
Publikováno v:
SynOpen, Vol 05, Iss 03, Pp 255-277 (2021)
The reported methods and data for the synthesis and reactivity of electron-deficient 3-vinylchromones containing electron-withdrawing groups at the exo-cyclic double bond are summarized and systematized for the first time. The main methods for obta
Externí odkaz:
https://doaj.org/article/4587ceb0ffa346c5a11548fc5d765a7f
Akademický článek
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Akademický článek
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Publikováno v:
Organic Materials, Vol 03, Iss 02, Pp 155-167 (2021)
Abstract This review summarizes syntheses of S,N-heteropentacenes, i.e. electron-rich sulfur and nitrogen-embedding pentacycles, and briefly highlights selected applications in molecular electronics. Depending on the anellation mode and the number of
Externí odkaz:
https://doaj.org/article/727c61ec7b024ae3bbd1ec794f4407af
Autor:
Marina V. Goryaeva, Olesya A. Fefelova, Yanina V. Burgart, Marina A. Ezhikova, Mikhail I. Kodess, Pavel A. Slepukhin, Vasily S. Gaviko, Victor I. Saloutin
Publikováno v:
Molecules, Vol 28, Iss 4, p 1983 (2023)
A new route to bicyclic γ-lactams was found, which was proposed as a three-component cyclization of ethyl trifluoropyruvate with methyl ketones and 1,2-, 1,3-amino alcohols. As a result, a series of trifluoromethyl-substituted tetrahydropyrrolo [2,1
Externí odkaz:
https://doaj.org/article/a0ae63583b9d49d69e41d372c492694f