Abstract
Six p-, m- and o-unsymmetrical divinylbenzenes 5a, 5b, 6a, 6b, 6c and 7a are synthesized from p-, m- and o- carboxybenzenediazonium tetrafluoroborates via sequential Heck reactions in good overall yield.
Acknowledgment
This work was supported by the National Natural Science Foundation of China (Project 20072017).