Abstract
Nickel-mediated carboxylation of trimethylsilylallenes using carbon dioxide as a carboxyl source smoothly proceeds to afford allylsilanes having a carboxyl group in good yields and goods selectivities.
Key words
allenes - carboxylic acids - metallacycles - nickel - silicon
References
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6 All our efforts to isolate vinyl silane 3a as a pure material failed, but a new singlet peak that appeared at 6.14 ppm in the 1H NMR spectrum of the mixture indicated the formation of 3a. The 1H NMR data for 3a (400 MHz, in CDCl3, only well-separated peaks) are as follows: δ = 6.14 (s, 1 H), 4.50 (s, 2 H), 3.73 (s, 3 H), 3.48 (t, J = 6.8 Hz, 2 H), 0.14 (s, 9 H).
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