22963-71-9Relevant articles and documents
Synthesis of poly(vinyl acetate) and poly(vinyl alcohol) containing block copolymers by combination of cobalt-mediated radical polymerization and ATRP
Debuigne, Antoine,Caille, Jean-Raphael,Willet, Nicolas,Jerome, Robert
, p. 9488 - 9496 (2005)
Poly(vinyl acetate) (PVAc) chains of a low polydispersity (M w/Mn ~ 1.1-1.2) have been prepared by cobalt-mediated radical polymerization of vinyl acetate (VAc). They have been end-capped by an activated bromide by addition of an α-bromoester or an a-bromoketone containing nitroxide and converted into effective macroinitiators for the atom transfer radical polymerization of styrene (Sty), ethyl acrylate, and methyl methacrylate. Because each block is formed by a controlled process, well-defined PVAc containing diblock copolymers are easily prepared. The PVAc-b-PS copolymers synthesized from α-bromoketone end-capped PVAc can be converted into well-defined poly(vinyl alcohol)-b-polystyrene amphiphiles by methanolysis of the poly(vinyl acetate) block. Self-association of an amphiphilic poly(vinyl alcohol)(3500)-b-polystyrene(16 600) in a (4/1) water/tetrahydrofuran mixture results in the formation of vesicles as observed by transmission electron microscopy.
HYDROXYLAMINE COMPOUNDS AND METHODS OF THEIR USE
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Page/Page column 62, (2008/12/08)
The present disclosure provides compounds that include hydroxylamines of formula (I) or (II), pharmaceutical compositions, and methods for their use. The methods utilize hydroxylamine compounds and/or their pharmaceutical compositions for the treatment of angiogenesis, hepatitis, complement-mediated pathologies, drusen-mediated pathologies, macular degeneration and certain other ophthalmic conditions, inflammation, arthritis, and related diseases and for the inhibition of complement activation.
A Study of the Favorskii Rearrangement with 3-Bromo-4-oxo-2,2,6,6-tetramethylpiperidin-1-oxyl
Sosnovsky, George,Cai, Zhen-wei
, p. 3414 - 3418 (2007/10/02)
Favorskii rearrangement reactions of the title compound with sodium hydroxide, sodium ethoxide, ammonia, several aliphatic amines, and ethyl sodiomalonate resulting in pyrrolidine nitroxyl radicals are described.