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Nickel(0)-mediated sequential addition of carbon dioxide and aryl aldehydes into terminal allenes
Masanori Takimoto1, Mitsunobu Kawamura, Miwako Mori
1Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan.
Organic Letters
|July 19, 2003
Abstract:
[reaction: see text] Nickel-mediated sequential addition of carbon dioxide and aryl aldehydes into terminal allenes is reported. The reaction proceeded in a diastereoselective manner to afford alpha-methylene-gamma-hydroxy carboxylic acids, which allowed stereoselective preparation of cis-beta, gamma-disubstituted alpha-methylene-gamma-lactones.