1,3-Butadienylzinc Trimer Formed via Transmetalation from 1,4-Dilithio-1,3-butadienes: Synthesis, Structural Characterization, and Application in Negishi Cross-Coupling

2012-08-13T00:00:00Z (GMT) by Yi Zhou Wen-Xiong Zhang Zhenfeng Xi
The first well-defined 1,3-butadienylzinc trimers have been synthesized by transmetalation of 1,4-dilithio-1,3-butadienes with 1 equiv of ZnBr<sub>2</sub>. Their structures have been determined by single-crystal X-ray structural analysis. Their reaction chemistry has been demonstrated by Pd-catalyzed Negishi cross-coupling with iodobenzenes.