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Oxygen transfer reaction from cyclic nitrones to triphenylphosphine

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Title: Oxygen transfer reaction from cyclic nitrones to triphenylphosphine
Author: Agolini, Franco
Degree Master of Science - MSc
Program Chemistry
Copyright Date: 1962
Subject Keywords Oxygen; Chemical reactions
Abstract: The compounds in the series from triphenylphosphine to triphenylbismuthine were examined as acceptors in oxygen transfer reactions involving the l-pyrroline-l-oxides. Triphenylphosphine was found to offer a useful route from the l-pyrroline-l-oxides to the corresponding pyrrolines. The second part of this work is centred on the structural investigation of Sanno's base (XV) (l), obtained as a by-product in the reductive cyclization of ethyl 2-acetyl-2-ethyl-4-methyl-3-nitromethyl valerate (aγ -nitro-ketone) and formulated by the author as having the Δ’ -pyrroline structure; this compound has since been found to be a cyclic nitrone (XVI). In the case of this complex nitrone, the oxygen transfer reaction to triphenylphosphine has been successful, yielding two isomeric Δ' -pyrrolines. The isolation of a Δ -pyrroline structure is confirmation of the proposed cyclic nitrone (XVI) structure for Sanno's base and as this provides a practical application of this reaction in structural work as well as showing that triphenylphosphine will reduce N-oxides in the presence of an ester group.
URI: http://hdl.handle.net/2429/38874
Series/Report no. UBC Retrospective Theses Digitization Project [http://www.library.ubc.ca/archives/retro_theses/]
Scholarly Level: Graduate

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