O−• chemical ionization of carbonyl compounds
نویسندگان
چکیده
منابع مشابه
Atmospheric pressure chemical ionization source. 1. Ionization of compounds in the gas phase.
A novel chemical ionization source for organic mass spectrometry is introduced. This new source uses a glow discharge in the flowing afterglow mode for the generation of excited species and ions. The direct-current gas discharge is operated in helium at atmospheric pressure; typical operating voltages and currents are around 500 V and 25 mA, respectively. The species generated by this atmospher...
متن کاملRegio- and stereoselective aminopentadienylation of carbonyl compounds.
A simple and robust protocol is detailed for the preparation of enantioenriched α-substituted (1,4-pentadien-3-yl)amine derivatives. The methodology involves the addition of an in situ formed pentadienyl indium reagent to chiral tert-butylsulfinimines, previously formed in the same pot. The addition takes place with excellent γ-regio- and diastereoselectivity for a wide range of carbonyl compou...
متن کاملTransition metal-catalyzed reduction of carbonyl compounds
.................................................................................................................... iii List of publications ..................................................................................................... v Abbreviations ............................................................................................................. ix
متن کاملCarbonyl Compounds Enols and Enolate Ons. Unsaturated and Polycarbonyl Compounds
ome of the most useful reactions of carbonyl compounds involve carbonhydrogen bonds adjacent to the carbonyl group. Such reactions, which can be regarded as the backbone of much synthetic organic chemistry, usually result in the replacement of the hydrogen by some other atom or group, as in the I I I I sequence H-C-C=O -+ X-C-C=O. The important examples we I I will consider in this chapter are ...
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ژورنال
عنوان ژورنال: Journal of the American Society for Mass Spectrometry
سال: 1991
ISSN: 1044-0305,1879-1123
DOI: 10.1016/1044-0305(91)80020-8