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The Controlled and Regioselective Macromolecular Nitration of Poly(2,2′-dioxy-1,1′-biphenylphosphazene) in Concentrated Sulfuric Acid

✍ Scribed by Carriedo, Gabino A.; Presa-Soto, Alejandro; Valenzuela, Maria L.


Book ID
111949002
Publisher
American Chemical Society
Year
2008
Tongue
English
Weight
199 KB
Volume
41
Category
Article
ISSN
0024-9297

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The hydrazones 3a,b, prepared from phenylhydrazine (1) and dialkyl 2-oxopropane-1,3-dicarboxylate (2a,b) were converted in concentrated sulfuric acid at -5 °C into a mixture of alkyl (3-carboxyindol-2yl)acetates (5a,b), and ethyl (5-ethoxy-1-phenyl-1H-pyrazol-3-yl)acetate 6. The hydrazone 8, prepare