Pure and Applied Chemistry p. 129 - 136 (1983)
Update date:2022-08-11
Topics:
Rosenblum
Bucheister
Chang
Cohen
Marsi
Samuels
Scheck
Sofen
Watkins
Cationic organometallic complexes derived by complexation of vinyl ethers with the dicarbonyl cyclopentadienyliron cation (F//p** plus ) are readily prepared, highly reactive reagents. These substances have been shown to function as vinyl cation equivalents for the vinylation of ketones, and for the synthesis of alpha -methylene- gamma -lactones and dihydrofurans. Similar complexation of propiolic esters gives a reactive species, which functions as a beta -acrylic ester cation equivalent and yields cyclobutenes, 1,3-dienes and dihydro- alpha -pyrones with olefins and cinnamic esters with aromatic systems.
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