Regarding the environment impact and depletion of oil reserves,there is growing interest in the development of materials from renewable sources.β-myrcene(MY) produced by a variety of plants,can be used as conjugated diene monomer for the preparation of biosourced elastomers.However,in previous studies,the polymerization of MY with anionic or free radical polymerization afforded polymers with low stereoregularity;the mole fraction of cis-l,4-unit were in 70％-80％.Recently,considerable progress has been made in the synthesis of highly regulated polyMY.For instance,Nd(BH4)3 (tetrahydrofuran,THF)3/n-BuEtMg afforded polyMY with high mole fraction of cis-1,4-unit up to 91.0％;lutetium dialkyl complex bearing bidentate-diimidosulfonate ligand activated by [Ph3 C] [B (C6F5)] 4 and Al(i-Bu) 3 worked effectively in the polymerization of MY to give isotactic 3,4-polyMY,while these complexes were rather difficult to prepare or handle.