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Initial formation of an olefin-copper(I) π-complex in conjugate addition of lithium dimethylcuprate to t-butyl cinnamate

Authors
Journal
Journal of Organometallic Chemistry
0022-328X
Publisher
Elsevier
Publication Date
Volume
265
Issue
2
Identifiers
DOI: 10.1016/0022-328x(84)80079-0

Abstract

Abstract The 13C NMR spectrum observed upon mixing lithium dimethylcuprate and t-butyl cinnamate in toluene- d 8/THF at −70°C shows the signals of the olefinic carbons shifted to lower δ values. These are attributed as due to a π-complex formed by coordination of copper to the carbon—carbon double bond of the cinnamate.

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