• Keine Ergebnisse gefunden

Chemistry of Iminium Salts and Related Compounds

N/A
N/A
Info
Herunterladen
Protected

Academic year: 2022

Aktie "Chemistry of Iminium Salts and Related Compounds"

Copied!
2
0
0

Wird geladen.... (Jetzt Volltext ansehen)

Jetzt herunterladen ( 2 Seite )

Volltext

(1)

Chemistry of Iminium Salts and Related Compounds

The twelve contributions of this issue deal with the chemistry of iminium salts and related compounds, such as imines, enamines, and tetrazenes. Almost all of these papers have been presented in part at the 5th Conference on Iminium Salts (ImSaT-5), Stimpfach-Rechenberg (Germany), September 11 - 13, 2001. In organic synthesis, iminium salts are used for a variety of different transforma- tions. These heteroanalogues of carbonyl compounds are not always applied as preformed substrates or reagents but are frequently generated as reaction inter- mediates. For example, the iminium salts proper can be generatedin situfrom carbonyl compounds, imines, amines, and enamines, while amidinium salts are readily formed from amidines or orthoamides. Among other aspects, the papers in this issue illustrate the significance of iminium salts in functional group transfor- mations, for the synthesis of functionalized heterocycles, and for the preparation of push-pull-substituted conjugatedÿsystems.

G. Maas, Editor Ulm, February 28, 2002

(2)

Referenzen

Jetzt herunterladen ( PDF - 2 Seite - 34.05 KB )

ÄHNLICHE DOKUMENTE

The Synthesis and Characterization of Nitrooxy- and Nitrosooxyborazine Compounds

Although several syntheses of borazine derivatives using borazine as starting material are reported, bor- azine is not a suitable starting material for further syntheses due to

Chemistry of Iminium Salts and Related Compounds

Kantlehner and coworkers (Stuttgart/Aalen) give an account of their studies on the reaction of N, N, N , N - tetramethyl-chloroformamidinium chloride with sodium,

Orthoamides and Iminium Salts, LXXV [1]. Contribution to the Formation of 2-Formyl-1,1,3,3-tetramethylguanidine and the Isomeric 1,1-Dimethyl-3-dimethylaminomethylene-urea

Surprisingly, guanidine 1 does not result from the reaction of 1,1,3,3-tetramethylguanidine with formylating reagents such as dimethylamino-methoxy-acetonitrile (8) or the

Orthoamides and Iminium Salts, LXXX [1]. C-Glycosyl Alkynecarboxylic Acid Orthoamides. Versatile Intermediates in the Synthesis of New Types of Highly Substituted C-Nucleoside Analogs

The clear filtrate was evaporated to yield piperidine-1-carboxamidine base as a colorless solid (1.3 g, 90 %). Water was added, and the mixture was extracted twice with CHCl 3.

Chemistry of Iminium Salts and Related Compounds This issue collects 13 papers relating to lectures presented at the 8

The contributions to this issue are good examples of the general usefulness of imines and iminium salts, and they illustrate once more that novel applications of these compound

Diverse Reactivities of Acetylenic Iminium Salts Toward 1,3-Oxazolium-5-olates (M¨unchnones)

Key words: Acetylenic Iminium Salts, 1,3-Dipolar Cycloaddition, Conjugate Addition, Mesoionic Compounds,

Diverse Reactivities of Acetylenic Iminium Salts Toward 1,3-Oxazolium-5-olates (M ¨unchnones)

A comparison of acetylenic iminium salt 1a with the corresponding acetylenic ketone 13 indicates that the iminium salts are not simply syn- thetic equivalents of the acetylenic

Synthesis and Properties of Thiamethoxam and Related Compounds*

The neonicotinoids are the most successful chemical class of insecticides reaching sales of more than $1 billion in 2003, mainly due to the excellent market performance of