Nitroalkyl ethers

Carboxymethylcellulose, polyethylene glycol Combination of a cellulose ether with clay Amide-modified carboxyl-containing polysaccharide Sodium aluminate and magnesium oxide Thermally stable hydroxyethylcellulose 30% ammonium or sodium thiosulfate and 20% hydroxyethylcellulose (HEC) Acrylic acid copolymer and oxyalkylene with hydrophobic group Copolymers acrylamide-acrylate and vinyl sulfonate-vinylamide Cationic polygalactomannans and anionic xanthan gum Copolymer from vinyl urethanes and acrylic acid or alkyl acrylates 2-Nitroalkyl ether-modified starch Polymer of glucuronic acid... 

K. F. Gotlieb, I. P. Bleeker, H. A. Van Doren, and A. Heeres. 2-Nitroalkyl ethers of native or modified starch, method for the preparation thereof, and ethers derived therefrom. Patent EP 710671,1996. 

Recently, Narasaka and co-workers have found that 1-nitroalkyl radicals are generated by oxidation of aci-nitroanions with CAN, and they undergo the intermolecular addition to electron-rich olefins.61 For example, when oxidation is carried out in the presence of silylenol ethers, (3-nitroketones are formed in good yield. (3-Nitroketones are readily converted into enones on treatment with base (see Section 7.3), as shown in Eq. 5.43. 

Nitroalkylation Reactions Reactions with Allylic Ethers Wittig Reactions with Lactols... 

Unlike nitroalkylation reactions, employing allylic ethers as reagents in C-glycoside chemistry has proven to be substantially more useful. These reactions, illustrated in Figure 7.13, show a propensity for a selectivity and are able to provide additional asymmetric centers. However, these... 

Diisopropyl ether allows the separation of nitro-phenol isomers and of several nitroalkyl and ni-trochlorophenols, as well as of dihydroxy and trihy-droxybenzenes. On alumina plates, dimethyl and trimethylphenols are better resolved than on silica gel when eluting with the above-mentioned solvent, as shown by the following R value sequences ... 

Reaction with olefins. The addition of dinitrogen tetroxide alone is not generally a useful synthetic system because of the formation of several products. However, Stevens and Emmons found that the reaction of dinitrogen tetroxide with an olefin (ether solution, N2) in the presence of excess iodine led to /3-nitroalkyl iodides, usually in good yield ... 

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