Results 31 to 40 of about 22,422 (224)

Synthesis of imidazo[1,2-a]pyridine-containing peptidomimetics by tandem of Groebke–Blackburn–Bienaymé and Ugi reactions

open access: yesBeilstein Journal of Organic Chemistry, 2023
Peptidomimetics with a substituted imidazo[1,2-a]pyridine fragment were synthesized by a tandem of Groebke–Blackburn–Bienaymé and Ugi reactions. The target products contain substituted imidazo[1,2-a]pyridine and peptidomimetic moieties as pharmacophores ...
Oleksandr V. Kolomiiets   +5 more
doaj   +1 more source

The Chemistry of Phenylimidotechnetium(V) Complexes with Isocyanides: Steric and Electronic Factors

open access: yesMolecules, 2022
Organometallic approaches are of ongoing interest for the development of novel functional 99mTc radiopharmaceuticals, while the basic organotechnetium chemistry seems frequently to be little explored. Thus, structural and reactivity studies with the long-
Guilhem Claude   +5 more
doaj   +1 more source

On the reaction of diphenylketene with isocyanides

open access: yesOrganic & Biomolecular Chemistry, 2005
The products obtained from the reaction of diphenylketene with a variety of isocyanides are shown to depend heavily on the concentration of diphenylketene; a high concentration results in the precedented dioxolane derivatives, at much lower concentrations the reactions follow an alternative course and polycyclic beta-lactams are generated by a cascade ...
Robertson, J, Bell, S, Krivokapic, A
openaire   +3 more sources

Mixed-Isocyanide Complexes of Technetium under Steric and Electronic Control

open access: yes, 2022
Reactions of the alkyl isocyanide fac-[Tc(CO)3(CNR)2Cl] complexes (2) (CNR = CNnBu or CNtBu) with the sterically encumbered isocyanide CNp-FArDarF2 [DArF = 3,5-(CF3)2C6H3] allow a selective exchange of the carbonyl ligands of 2 and the isolation of the ...
Adelheid Hagenbach (1803811)   +7 more
core   +1 more source

Isocyanide insertion into Au-H bonds: First gold iminoformyl complexes [PDF]

open access: yes, 2018
Isocyanides insert into gold(III)–hydrogen bonds to give the first examples of gold iminoformyl complexes. The reaction is initiated by catalytic amounts of radicals; DFT calculations indicate that this is an equilibrium reaction driven forward by ...
Fernández Cestau, Julio   +15 more
core   +1 more source

Isocyanide-Based Multicomponent Reactions for the Synthesis of Heterocycles

open access: yesMolecules, 2015
Multicomponent reactions (MCRs) are extremely popular owing to their facile execution, high atom-efficiency and the high diversity of products. MCRs can be used to access various heterocycles and highly functionalized scaffolds, and thus have been ...
András Váradi   +3 more
doaj   +1 more source

[3+2] Cycloaddition of Tosylmethyl Isocyanide with Styrylisoxazoles: Facile Access to Polysubstituted 3-(Isoxazol-5-yl)pyrroles

open access: yesMolecules, 2017
A facile access to polysubstituted 3-(isoxazol-5-yl)pyrroles was developed through [3+2] cycloaddition of tosylmethyl isocyanide (TosMIC) and styrylisoxazoles.
Xueming Zhang, Xianxiu Xu, Dawei Zhang
doaj   +1 more source

Silver-Catalyzed Decarboxylative Acylation of Isocyanides Accesses to α-Ketoamides with Air as a Sole Oxidant

open access: yesMolecules, 2023
α-Ketoamide moieties, as privileged units, may represent a valuable option to develop compounds with favorable biological activities, such as low toxicity, promising PK and drug-like properties.
Jia Xu   +6 more
doaj   +1 more source

Isocyanide-Based Multicomponent Bicyclization with Substituted Allenoate and Isatin: Synthesis of Unusual Spirooxindole Containing [5.5]-Fused Heterocycle

open access: yes, 2016
A three-component bicyclization reaction of isocyanide, substituted allenoate, and isatin has been disclosed. This protocol is proposed to proceed through Michael addition, double cyclization, and [1,5]-hydride shift sequence, thus leading to the ...
Ruolan Jiang (3137292)   +7 more
core   +1 more source

From Isocyanides to Iminonitriles via Silver-mediated Sequential Insertion of C(sp3)–H Bond

open access: yesiScience, 2019
Summary: Heterocycles are prevalent constituents of many marketing drugs and biologically active molecules to meet modern medical challenges. Isocyanide insertion into C(sp3)–H bonds is challenging especially for the construction of quaternary carbon ...
Huiwen Chi   +7 more
doaj   +1 more source

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