ChemInform Abstract: Reactions of Organic Anions. Part 156. A Simple and Efficient Synthesis of Alkyl (2-Nitroaryl)acetates and Alkyl 2-(2-Nitroaryl)propanoates (III) via Vicarious Nucleophilic Substitution of Hydrogen in Nitroarenes (I) by Carbanions of

ChemInform ◽  
1989 ◽  
Vol 20 (26) ◽  
Author(s):  
B. MUDRYK ◽  
M. MAKOSZA
Keyword(s):  
Nucleophilic Substitution ◽  
Organic Anions ◽  
Nucleophilic Substitution Of Hydrogen ◽  
Efficient Synthesis ◽  
Vicarious Nucleophilic Substitution

Reactions of organic anions. 174. Vicarious Nucleophilic Substitution of hydrogen (VNS) in nitrobenzofuroxans and the Boulton–Katritzky rearrangement of the VNS products

1990 ◽  
Vol 68 (12) ◽  
pp. 2239-2241 ◽  
Author(s):  
Stanisław Ostrowski ◽  
Krzysztof Wojciechowski
Keyword(s):  
Nucleophilic Substitution ◽  
Organic Anions ◽  
Nucleophilic Substitution Of Hydrogen ◽  
Tert Butyl ◽  
Vicarious Nucleophilic Substitution ◽  
Phenyl Sulfone

The Vicarious Nucleophilic Substitution of hydrogen in 4-nitrobenzofuroxan derivatives by carbanions of chloromethyl phenyl sulfone, chloromethyl p-tolyl sulfone, chloromethyl tert-butyl sulfone, and N,N-dimethyl chloromethane sulfonamide proceeds at positions 5 and 7. In some cases the Boulton–Katritzky rearrangement of the products obtained, leading to more stable 7-substituted isomers, was observed. Keywords: carbanions, nitrobenzofuroxans, sulfones, Vicarious Nucleophilic Substitution, Boulton–Katritzky rearrangement.

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