Solubility of Uranyl Nitrate Precipitates withN-Alkyl-2-pyrrolidone Derivatives (Alkyl =n-Propyl,n-Butyl,iso-Butyl, and Cyclohexyl)
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Imidacloprid and Related Compounds: Structure and Water Solubility of N-Alkyl Derivatives of Imidacloprid.
An intramolecular hydrogen bond between NH•••O2N in insecticide, imidacloprid (1), and its nitromethylene analog 15 was proved by NMR and IR spectra. That electron delocalization over their planar moieties was disrupted by alkylation at the imidazolidine nitrogen atom is demonstrated by the hypsochromic shifts in UV and deshielding effect in NMR spectra. Interestingly, the N-alkyl derivatives (...
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A highly efficient method for the synthesis of N-alkyl isatins starting from N-alkyl 2-bromo or 2-chloro acetanilides is described. The starting materials are easy to prepare and the yields of isatins are generally high. Operationally the reaction is very simple to run. Even though best results were obtained with a catalytic amount of CuI, the reactions of N-alkyl 2-bromo acetanilides actually ...
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ژورنال
عنوان ژورنال: Journal of Nuclear Science and Technology
سال: 2009
ISSN: 0022-3131,1881-1248
DOI: 10.1080/18811248.2009.9711608