Ni-catalyzed reductive coupling of α-halocarbonyl derivatives with vinyl bromides
作者:Canbin Qiu、Ken Yao、Xinghua Zhang、Hegui Gong
DOI:10.1039/c6ob02269c
日期:——
This work describes the vinylation of α-halo carbonyl compounds with vinylbromides under Ni-catalyzed reductive coupling conditions. While aryl-conjugated vinylbromides entail pyridine as the sole labile ligand, the alkyl-substituted vinylbromides require both bipyridine and pyridine as the co-ligands.
Radical reactions in esters with alkoxy functionality chemistry an unusual alcohol moiety hydrogen abstraction
作者:Ming-Chung Yan、Yeong-Jiunn Jang、Jhenyi Wu、Yung-Feng Lin、Ching-Fa Yao
DOI:10.1016/j.tetlet.2004.02.158
日期:2004.4
Various geometrically pure (E)-alkenes have been synthesized by radical substitution of alcohol moieties generated via hydrogenabstraction within ethyl esters. These reactions occurred with high regioselectivity and gave a new access to 1-methyl-3-aryl-allyl esters.
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.