Results 51 to 60 of about 77,236 (141)

Hetero Diels-Alder adduct formation between nitrosobenzene and tetra-methyl purpurogallin and its retro-Diels-Alder reaction

Journal of the Brazilian Chemical Society, 2001
An efficient synthesis of a Diels-Alder adduct between purpurogallin tetramethyl ether (TMPG) and nitrosobenzene (NOB) is reported. The thermal decomposition kinetics of the adduct, which follows a retro-Diels-Alder mechanism, was studied using ¹H-NMR ...
Gamenara Daniela, Días Eduardo, Tancred Néstor, Heinzen Horacio, Moyna Patrick, Forbes Eric J.   +5 more
doaj  

Synthesis of 3,4-dihydro-1,8-naphthyridin-2(1H)-ones via microwave-activated inverse electron-demand Diels–Alder reactions

Beilstein Journal of Organic Chemistry, 2014
Substituted 3,4-dihydro-1,8-naphthyridin-2(1H)-ones have been synthesized with the inverse electron-demand Diels–Alder reaction from 1,2,4-triazines bearing an acylamino group with a terminal alkyne side chain.
Salah Fadel, Youssef Hajbi, Mostafa Khouili, Said Lazar, Franck Suzenet, Gérald Guillaumet   +5 more
doaj   +1 more source

Towards the total synthesis of vinigrol [PDF]

, 2006
Virigrol is a unique tricyclic diterpene containing the unprecedented decahydro-1, 5- butanonapathalene framework and with these unusual structural features it also has varied biological activity, making it a challenging synthetic target. Despite various
Johnstone, Lisa
core  

Diels-Alder reactions for carbon material synthesis and surface functionalization

, 2013
To meet the ever growing demand for carbon nanomaterials with tailored properties, Diels-Alder reactions are emerging as an efficient alternative to other synthetic methods.
Zydziak, N., Yameen, B., Barner-Kowollik, C.   +2 more
core   +1 more source

Anthracen- und Anthrachinon-Oligomere mit ortho-Cyclophanverknüpfung durch wiederholte Diels-Alder-Reaktion von 1,2,5,6-Tetra-exo-methylencyclooctan

CHIMIA, 1988
The design of efficient organic electron acceptors requires oligomeric and polymeric hydrocarbons in which separate redox-active units are connected in a sterically variable fashion.
Manfred Wagner, Werner Wohlfarth, Klaus Müllen   +2 more
doaj   +1 more source

Diversity of secondary metabolites from Genus Artocarpus (Moraceae) [PDF]

, 2010
Abstrak. Hakim A. 2010. Keanekaragaman metabolit sekunder Genus Artocarpus (Moraceae). Nusantara Bioscience 2:146-156. Beberapa spesies dari genus Artocarpus (Moraceae) telah diteliti kandungan bahan alamnya.
Aliefman Hakim, HAKIM, ALIEFMAN, HAKIM, A. (ALIEFMAN)   +2 more
core  

Preparation and Reaction Chemistry of Novel Silicon-Substituted 1,3-Dienes

Molecules, 2015
2-Silicon-substituted 1,3-dienes containing non transferrable groups known to promote transmetallation were prepared by Grignard chemistry and enyne metathesis.
Partha P. Choudhury, Mark E. Welker
doaj   +1 more source

REACTION OF 4-METHYL- 1 2,4-TRIAZOLINE- 3,5-DIONE WITH DI AND TRI-SUBSTITUTED STYRENES S.E. Mallakpour* and G.B. Butler** [PDF]

Journal of Sciences, Islamic Republic of Iran, 1993
2,4,6-Triisopropylstryrene was synthesized in a single step via the Witting Reaction from the corresponding aldehyde. The reaction of three styrene's derivatives, 2,6-dimethylstyrene, 2,4,6-trimethylstyrene, and 2,4,6- triisopropylstyrene with 4-methyl-l,
doaj  

High-level Computational Study of the Site-, Facial- and Stereoselectivities for the Diels-Alder Reaction Between o-Benzoquinone and Norbornadiene

Molecules, 2000
Ab initio and DFT quantum chemical calculations have been applied to a study of the Diels-Alder reaction of o-benzoquinone as diene and norbornadiene as dienophile.
Ronald N. Warrener, Martin R. Johnston, Davor Margetic   +2 more
doaj   +1 more source

Diels-Alder reactions of imino dienophiles

, 2016
Kutatómunkám során célul tűztük ki N-toziloxim és N-szulfonil imin származékok előállítását benzaldehid származékokból kiindulva, majd ezen vegyületek aza-Diels-Alder reakcióit kívántam vizsgáltam tetrahidropiridin származékok előállítására. A lehetséges
Auksz, Flóra
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