Synthesis of 1-Aryl-3-Pyrazolidinones through 3-(2'-Arylaminoethyl)-1,4,2-Dioxide-5-one intermediates

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Title: Synthesis of 1-Aryl-3-Pyrazolidinones through 3-(2'-Arylaminoethyl)-1,4,2-Dioxide-5-one intermediates
Author: Lincoln, David G.
Abstract: A new preparation of 1-arylpyrazolidinones, not involving the prior preparation of arylhydrazines , is reported. The reaction of 3-arylaminopropiono hydroxamic acids with chloroformates gives the title compounds. This transformation is discussed in terms of the intermediacy of the corresponding l,4,2-dioxazol-5-one ring system. These intermediates undergo mild nitrogen-atom induced decomposition with simultaneous N-N bond formation. The effects of chloroformates and aryl substitution is discussed.
Record URI: http://hdl.handle.net/1850/8370
Date: 1983-05

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