Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon SK S7N 5C9, Canada.
J Org Chem. 2012 Apr 6;77(7):3576-82. doi: 10.1021/jo202655h. Epub 2012 Mar 20.
A practical and chromatography-free synthesis of vinamidinium salts and their use as diene precursors in Diels-Alder reactions is reported. Additionally, 1,3-dipyrrolidino-1,3-butadiene was shown to be significantly more reactive than Rawal's diene in a competition experiment.
本文报道了一种实用且无需色谱分离的方法,用于合成 vinamidinium 盐,并将其用作 Diels-Alder 反应中的二烯前体。此外,在竞争实验中,1,3-二吡咯烷基-1,3-丁二烯的反应活性明显高于 Rawal 二烯。