Results 61 to 70 of about 34,359 (255)
Crystal structures of methyl 3,5-dibromo-4-cyanobenzoate and methyl 3,5-dibromo-4-isocyanobenzoate
The title crystals, C9H5Br2NO2, are the first reported 2,6-dihalophenyl cyanide–isocyanide pair that have neither three- nor two-dimensional isomorphism. Both crystals contain contacts between the carbonyl O atom and a Br atom.
Wayland E. Noland +4 more
doaj +1 more source
Homocoupling of CO and isocyanide mediated by a C,C'-bis(silylenyl)-substituted ortho-carborane.
The unexpected reactivity of the o-carborane supported bis-silylene [(LSi:)C]2B10H10 1 {L= PhC(tBuN)2} towards carbon monoxide and 2,6-dimethylphenyl isocyanide is reported.
Y. Xiong +4 more
semanticscholar +1 more source
We report here a new methodology to prepare functional poly(acetylene)s under aqueous conditions. This methodology is underpinned by poly(O‐propargyl‐N‐amino carbamate) (P1), a reactive poly(acetylene) carrying acyl hydrazines. Thus, P1 reacts with aldehydes to give functional poly(acetylene)s, including cationic, hydrophobic, and sugar‐loaded poly ...
Tom Leigh +8 more
wiley +1 more source
Isocyanoazulenes (CNAz) constitute a relatively new class of isocyanoarenes that offers rich structural and electronic diversification of the organic isocyanide ligand platform. This article considers a series of 2-isocyano-1,3-X2-azulene ligands (X = H,
Mason D. Hart +7 more
doaj +1 more source
Multicomponent Cyclopolymerization of Alkynes, Isocyanides and Isocyanates Toward Heterocyclic Polymers [PDF]
Xiaoheng Wang +5 more
openalex +1 more source
We report the results from a kinetic and mechanistic investigation of an inverse‐electron‐demand Diels–Alder (IEDDA) cycloaddition involving an oxazole‐type diene synthesized via an Ugi–Zhu multicomponent reaction (UZ‐3CR). ABSTRACT Pyridines are a crucial class of heterocycles with widespread applications in natural products, pharmaceuticals, and ...
Galdina V. Suárez‐Moreno +6 more
wiley +1 more source
Trapping an Aryl‐substituted Borete Intermediate in Catalyst‐free 1,5‐Diborocine Synthesis
A transient aryl‐substituted borete was trapped as its adduct with 4‐(dimethylamino)pyridine (dmap) and fully characterised. While the dmap adduct is highly kinetically stable, the free borete could not be observed in the absence of dmap. Density‐functional calculations support a rapid dimerisation of the borete via (4 + 4) cycloaddition, yielding a 1 ...
Douglas Turnbull, Marc‐André Légaré
wiley +1 more source
Dieser Mini‐Review behandelt die neuesten Fortschritte bei der Synthese, Reaktivität und metallfreien katalytischen Verwendung von mesoionischen N‐heterocyclischen Olefinen (mNHOs), Iminen (mNHIs), Thionen (mNHTs) und Phosphinidenen (mNHPs). Kurzzusammenfassung Übergangsmetallverbindungen sind allgemein für ihre Fähigkeit bekannt, kleine Moleküle zu ...
Subir Maji +3 more
wiley +1 more source
Mesoionic N‐Heterocyclic Olefins, Imines, Thiones, Phosphinidenes and Their Application in Catalysis
This minireview covers recent advances in the synthesis, reactivity, and metal‐free catalytic uses of mesoionic N‐heterocyclic olefins (mNHOs), imines (mNHIs), thiones (mNHTs), and phosphinidenes (mNHPs). Abstract Transition metal compounds are widely known for their ability to activate small molecules and are excellent catalysts for a wide range of ...
Subir Maji +3 more
wiley +1 more source
Co‐Impregnated MgAl Layered Double Hydroxide as an Efficient Catalyst for Glycerol Oligomerization
A cobalt(II) acetylacetonate–impregnated MgAl LDH catalyst was developed, showing enhanced basicity and superior activity in glycerol oligomerization, achieving 68% conversion and 27% diglycerol selectivity. The catalyst maintained high performance over three recycling cycles, with structural and surface modifications confirmed by comprehensive ...
Fernando José Soares Barros +5 more
wiley +1 more source

