cas 4732-58-5, (E)-1-chloro-N-hydroxy-2-nitrosoethenamine

Articles about 4732-58-5Total 2 be found

On the Reaction of Chloroglyoximes with Aryl Isocyanates
Reaction of chloroglyoxime 1 with aryl isocyanates yielded monocarbamates 3, and chlorooxime functional group was unchanged.The 1,3-cycloaddition of nitrile N-oxides generated from 3 to methyl methacrylate gave isoxazole derivatives 5.Compounds 5 were als
Witek, S.,Czekanski, T.,Kaczmarek, A.
p. 731 - 736
(2007/10/02)

Methods for the Stereoselective Cis Cyanohydroxylation and Carboxyhydroxylation of Olefins
Two valuable reagents for the cis-specific vicinal cyanohydroxylation and carboxyhydroxylation of olefins are described.The cyanohydroxylation process is based on the decarboxylative ring opening of 3-carboxyisoxazolines prepared by the cycloaddition reaction of carbethoxyformonitrile oxide with various alkenes.Fragmentation of the isoxazolines prepared from cis- and trans-2-butene has been found to occur without any crossover in stereochemistry.The carboxyhydroxylation process begins with the dipolar cycloaddition reaction of the nitrile oxide derived from thetetrahydropyranyl ether derivative of 2-nitroethanol.Deprotection, hydrogenation, and oxitative cleavage of the derived dihydroxy ketone yield the stereochemcally pure β-hydroxy carboxylic acid.
Kozikowski, Alan P.,Adamczyk, Maciej
p. 366 - 372
(2007/10/02)