Zur Kenntnis heterozyklischer Ringsysteme III

Seka, Reinhard; Preissecker, Heinrich

doi:10.1007/bf01522111

Cited by 6 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Materials. 2-(Heptadecyl) naphtha[2,3]imidazole (NpImC17) was synthesized by the condensation of 2,3-naphthylenediamine (Tokyo Kasei) with stearic acid (Tokyo Kasei) according to the literature method . Equimolar mixtures of the two compounds were heated at 140 °C for 8 h under the N 2 atmosphere.…”

Section: Methodsmentioning

confidence: 99%

Chiral Molecular Assemblies from a Novel Achiral Amphiphilic 2-(Heptadecyl) Naphtha[2,3]imidazole through Interfacial Coordination

2003

View full text Add to dashboard Cite

A novel amphiphilic compound 2-(heptadecyl) naphtha[2,3]imidazole (NpImC17) was synthesized, and its coordination with AgNO(3) in situ in the monolayer at the air/water interface and ex situ in the Langmuir-Blodgett (LB) film on solid substrate has been investigated. It has been found that interfacial coordination between NpImC17 and Ag(I) ion occurred both in the monolayer and in the LB film. It is interesting to note that the Ag(I)-coordinated ultrathin film became chiral although the ligand itself is achiral. It was suggested that the chirality of the Ag(I)-coordinated LB film was developed due to the formation of a helical coordination polymer through the interfacial coordination. To the best of our knowledge, this is the first report on the formation of chiral monolayer and LB films from an achiral molecule through interfacial coordination.

show abstract

Section: Methodsmentioning

confidence: 99%

Chiral Molecular Assemblies from a Novel Achiral Amphiphilic 2-(Heptadecyl) Naphtha[2,3]imidazole through Interfacial Coordination

2003

View full text Add to dashboard Cite

show abstract

“…2-Alkylbenzimidazoles ( n = 0−11, 13, 15, 17, abbreviated as BzC n ) were prepared by the condensation of o -phenylenediamine and corresponding carboxylic acid (from formic acid to stearic acid) according to the literature method …”

Section: Methodsmentioning

confidence: 99%

Silver(I) Ion Induced Monolayer Formation of 2-Substituted Benzimidazoles at the Air/Water Interface

1997

View full text Add to dashboard Cite

The monolayer formation of a series of 2-substituted benzimidazoles at the air/water interface was studied by the measurements of surface pressure-area isotherms. Concentrated silver(I) ion in the subphase can induce the monolayer formation of 2-alkylbenzimidazole derivatives (BzCn) with the alkyl chain equal to or greater than C5 although the derivatives cannot form monolayers on pure water surface except BzC17. Similar behavior of monolayer formation of 2-phenylbenzimidazole was also observed. The measurements of UV spectra and X-ray photoelectron spectroscopy analysis of the transferred films suggested that such monolayer formation was fulfilled through an in situ formation of a polymeric silver(I)−benzimidazole complex at the air/water interface.

show abstract

The Curtius Reaction

Smith

2011

Organic Reactions

View full text Add to dashboard Cite

The decomposition of acid azides to isocyanates and nitrogen is known as the Curtius rearrangement. The reaction is a preparative method for isocyanates, ureas, amides, and amines. When coupled with a hydrolytic step, the Curtius rearrangement becomes a practical procedure for replacing a carboxyl group by an amino group. The overall process of converting an acid through its azide to an amine is commonly referred to as the Curtius reaction. Acid azides are commonly prepared by treating hydrazides in cold, aqueous solution with nitrous acid. Azides can be rearranged in inert solvents, from which isocyanates can be isolated in the presence of water or alcohol., which will react with the intermediate to form urethans or ureas.

show abstract

Zur Kenntnis heterozyklischer Ringsysteme III

Cited by 6 publications

References 0 publications

Chiral Molecular Assemblies from a Novel Achiral Amphiphilic 2-(Heptadecyl) Naphtha[2,3]imidazole through Interfacial Coordination

Chiral Molecular Assemblies from a Novel Achiral Amphiphilic 2-(Heptadecyl) Naphtha[2,3]imidazole through Interfacial Coordination

Silver(I) Ion Induced Monolayer Formation of 2-Substituted Benzimidazoles at the Air/Water Interface

The Curtius Reaction

Contact Info

Product

Resources

About