Olefination of Carbonyl Compounds through Reductive Coupling of Alkenylboronic Acids and Tosylhydrazones
作者:M. Carmen Pérez-Aguilar、Carlos Valdés
DOI:10.1002/anie.201200683
日期:2012.6.11
The partners decide: The CC bond‐forming reductive cross‐coupling of alkenylboronicacids and tosylhydrazones takes place under mild reaction conditions without the need of a metal catalyst, thus giving rise to olefination‐type products (see scheme). The position of the double bond in the product is determined by the structure of the coupling partners.
9-Phenethylfluorene, 9-phenylethylidenefluorene, β-9-fluorenylstyrene, and spiro-1-(9-fluorenyl)-2-phenyl-cyclopropane have been synthesised and their structure established. Certain erroneous statements about 2-(9-fluorenyl)-1,1-diphenylethene and 2-fluorenylidene-1,1-diphenylethane have been corrected and the isomerisation of these substances compared with that of 9-phenylethylidenefluorene and β-9-fluorenylstyrene