Stabilization of singlet ethoxycarbonylnitrene by 1,4-dioxan
- 1 January 1976
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 2
- No. 11,p. 1201-1205
- https://doi.org/10.1039/p29760001201
Abstract
A study of the solvent polarity and triplet quenching effects on the insertion of ethoxycarbonylnitrene into cyclic ethers demonstrates that the singlet state of the nitrene is stablized by 1,4-dioxan. The lowering of the yield of the triplet nitrene product compared with that of the singlet nitrene product in 1,4-dioxan as solvent supports this postulate. The activation parameters for insertion in the presence and absence of a triplet quencher further support singlet stabilization. This is discussed in the terms of the interaction of the nitrene p orbital with the lone pair electrons of ether oxygen atoms.Keywords
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