Preparation of nonsymmetrically substituted stilbenes in a one-pot two-step Heck strategy using ethene as a reagent
We present here a strategy for the preparation of nonsymmetrically substituted stilbenes using a one-pot two-step double Heck strategy. First a protocol is developed for the selective preparation of a range of styrenes using ethene as the alkene coupling partner. Then conditions are found for the effective coupling of the styrenes with aryl halides using a 1:1 stoichiometric ratio of the two components. The use of the microwave apparatus to perform the reactions offers a convenient method for synthesis as well as for safely, easily, and accurately loading vessels with gaseous reagents.
Kormos, C. M., & Leadbeater, N. E. (2008). Preparation of nonsymmetrically substituted stilbenes in a one-pot two-step Heck strategy using ethene as a reagent. Journal of Organic Chemistry, 73(10), 3854-3858. https://doi.org/10.1021/jo800235c