Search

Two micro-capillary electrophoresis techniques are underdevelopment to acquire and determine catecholamines in single nerve cells. The first method involves the analysis of neurotransmitters in a portion of cytoplasm withdrawn from a single cell, and the second method involves the determination of neurotransmitters in a whole nerve cell. Amperometric detection can be used to determine the easliy oxidized species in both of these methods. A large dopamine-containing cell in the brain of the pond snail, Planorbis corneus, has been used as a model system to evaluate both of these microsampling techniques. Results for both the acquisition and separation of neurotransmitters in whole nerve cells as well as the analysis of small portions of single cell cytoplasm are presented here.

Copyright of Zeitschrift für Physikalische Chemie is the property of De Gruyter and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Angewandte Chemie is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Angewandte Chemie is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Die ersten Addukte von Iminoboranen mit cyclischen Alkyl(amino)carbenen (CAACs) oder N-heterocyclischen Carbenen (NHCs) wurden bei tiefer Temperatur (-45°°C) synthetisiert und isoliert. Mit kurzen B=N-Bindungen und planaren Boratomen gleicht die Struktur dieser Addukte derjenigen isoelektronischer Imine. Bei der Reaktion von Di-tert-butyliminoboran mit 1,3-Bis(isopropyl)imidazol-2-yliden (IPr) lagerte sich das anfänglich kurz gebildete Lewis-Säure-Base-Addukt schnell zu einem Carben mit einem Aminoboransubstituenten in 4-Position um. Erwärmen des Iminoboran-CAAC-Adduktes auf Raumtemperatur ergab unter intramolekularem Ringschluss ein bicyclisches 1,2-Azaborolidin. [ABSTRACT FROM AUTHOR]