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Structure of the adducts of lithium dimethylcuprate to acetylenic esters: Spectroscopical proof for the presence of copper allenolates

Authors
Journal
Tetrahedron Letters
0040-4039
Publisher
Elsevier
Publication Date
Volume
30
Issue
39
Identifiers
DOI: 10.1016/s0040-4039(01)93746-3

Abstract

Abstract The 13C NMR spectra of the adducts of Me 2CuLi to acetylenic esters RCCCO 2Me (R = H, Me, Et) were obtained in diethyl ether and THF between −100° and −60°C. Comparison with model compounds shows that these adducts possess copper allenolate structures.

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