The first Pd/Cu catalyzed selective C2-alkenylation of pyridines with internal alkynes has been developed via the pyridinium salt activation strategy. Importantly, the configuration of the product alkenylpyridines could be tuned by the choice of the proper N-alkyl group of the pyridinium salts, thus allowing for both the Z- and E-alkenylpyridines synthesized with good regio- and stereoselectivity.
作者:Juan J. Vaquero、Domingo García-Cuadrado、Ana M. Cuadro、Julio Alvarez-Builla
DOI:10.1055/s-2002-34903
日期:——
A novel unit based on pyridiniumcations has been synthesized by the Stille reaction and represents a model for development of molecular electronic devices.