4-[(4-Methylphenyl)sulfonyl]-1-(triphenylphosphoranylidene)-2-butanone and its dianion as versatile tools in organic synthesis
作者:Achille Barco、Simonetta Benetti、Carmela De Risi、Paolo Marchetti、Gian P. Pollini、Vinicio Zanirato
DOI:10.1016/s0040-4039(98)00108-7
日期:1998.4
The title compound and the corresponding dianion have been used as convenient precursors for substituted divinyl ketones in both carbo-and heterocyclization reactions in a one-pot three-step sequence leading to substituted carbo-and heterocyclic ring systems and for the construction of the 4-keto-2-alkenoate subunit, a common structural feature of a variety of natural compounds, respectively. (C) 1998 Elsevier Science Ltd. All rights reserved.