Results 101 to 110 of about 5,623 (241)
Molecules, 2018 Increasing interests have been invested in the development of synthetic strategies toward the construction of spiro[pyrrolidine-2,3′-oxindole], which is the core structural skeleton in some compounds with diverse biological activities.
Lunqiang Jin, Feng Liang
doaj +1 more source
Catalytic Enantioselective Functionalization of Maleimides: An Update
Chinese Journal of Chemistry, Volume 42, Issue 24, Page 3605-3622, 15 December 2024.Maleimides are multisite‐reactive scaffolds that have stimulated a growing interest in the field of synthetic organic chemistry. The present review covers the utilization of maleimides as electrophilic partners and pro‐nucleophilic partners in metal‐catalyzed or organocatalyzed functionalizations with the control of either central and/or axial ...
Muriel Amatore +3 more
wiley +1 more source
Ethyl 1-benzyl-1,2,3,3a,4,10b-hexa-hydro-pyrrolo-[2',3':3,4]pyrrolo-[1,2-a]benzimidazole-2-carboxyl-ate. [PDF]
, 2011 The title mol-ecule, C(22)H(23)N(3)O(2), was obtained via an intra-molecular cyclo-addition of an azomethine ylide and an alkene tethered by a benzimidazole unit. The benzoimidazole unit is essentially planar, with an r.m.s.
Fettinger, James C +2 more
core +2 more sources
European Journal of Organic Chemistry, Volume 27, Issue 44, November 25, 2024.1,2‐Diaza‐1,3‐butadienes, also called azoalkenes, have received considerable attention as key synthons for constructing various heterocyclic scaffolds. This minireview summarizes the contribution of our group in this field over the period from 2009 to the present, focusing on the role of the azoene building block in forming the heterocyclic structures.
Lucia De Crescentini +4 more
wiley +1 more source
Catalytic methods for the synthesis of spirooxindoles, pyrroloindolines, and flavanones [PDF]
, 2016 This thesis discloses catalytic, enantioselective dipolar cycloadditions to deliver new nitrogen-containing heterocycles and formal hydroarylations of olefins that have previously not been possible. Catalytic, enantioselective, dearomative cycloadditions
Gerten, Anthony
core +3 more sources
Advanced Synthesis &Catalysis, Volume 366, Issue 21, Page 4441-4451, November 5, 2024.Abstract We report sequential wavelength‐selective photochemical transformations of 1‐alkenylpyrazolo[1,2‐a]pyrazolones to pyrazolo[1,2‐a][1,2]diazepines or cyclobuta[c]pyrazolo[1,2‐a]pyrazolones. Irradiation of 1‐alkenylpyrazolo[1,2‐a]pyrazolones with visible‐light (blue LED, 457 nm) induced selective ‘ring switching’ transformation into pyrazolo[1,2 ...
Ines Kulašić +5 more
wiley +1 more source
Small, Volume 20, Issue 45, November 7, 2024.Germanene is produced by the thermal dehydrogenation of germanane in order to generate the dipolarophilic sp2 domains, where the cycloaddition of the azomethine ylide can take place. The azomethine ylide is generated by the decarboxylative condensation of 3,4 dihydroxybenzaldehyde and sarcosine. Abstract Group‐14 Xenes beyond graphene such as silicene,
Theodosis Giousis +9 more
wiley +1 more source
Defect-engineered graphene functionalization via cycloaddition reaction – towards a versatile platform for nanoscale devices and 3D heterostructures [PDF]
, 2022 In recent years it has been shown that the outstanding properties of graphene, a direct consequence of its unique 2D structure, could be further tailored by surface functionalization with suitable materials, towards a fine tuning of the system's physical
BASTA, Luca
core
Angewandte Chemie, Volume 136, Issue 42, October 14, 2024.Progress in the development of non‐alternant nanographenes containing N‐doped non‐hexagonal pairs, including N‐doped pentagon‐heptagon (5–7) pairs, N‐doped pentagon‐octagon (5–8) pairs and N‐doped heptagon‐heptagon (7–7) pairs, is comprehensively covered in this review.
Huan Luo, Junzhi Liu
wiley +1 more source
A simple two-step synthesis of 2-(alkylamino)-1-arylethanols, including racemic adrenaline, from aromatic aldehydes via 5-aryloxazolidines [PDF]
, 2013 Benzaldehydes react smoothly with nonstabilized azomethine ylides, generated in situ from sarcosine/formaldehyde or N-(methoxymethyl)-N- (trimethylsilylmethyl)benzylamine, to give 5-aryloxazolidines as intermediates.
Moshkin, V. S., Sosnovskikh, V. Y.
core +1 more source