Polyvinyl chloridediethylenetriamine supported palladium complex (PVCDETAPd) was synthesized from polyvinyl chloride via a simple method

and the production cost of the complex was low.PVC-DETA-Pd has good thermal stability

so it can satisfy the high temperature condition of the Heck reaction.XPS analysis shows that two different chemical states of palladium

Pd0 and Pd2+

are existed in PVC-DETA-Pd.The molar ratio of Pd0 to Pd2+ is 1∶1.44. PVC-DETAPd is an efficient catalyst for Heck arylations of aryl bromides (or chlorides)

which are cheaper substrates than aryl iodides.The yield of the Heck reaction of bromobeneze and styrene catalyzed by PVC-DETAPd was up to 99% in nitrogen atmosphere at 110℃ and tetrabutylammonium bromide (TBAB) as solvent.The reaction of bromobeneze with styrene was catalyzed efficiently by PVC-DETA-Pd in presence of several kinds of acid-binding agents such as Et3N

Bu3N

Na2CO3 and NaAc.The best result was obtained when tributylamine was chosen as the acid-binding agent.The Heck reactions of substituted aryl bromides with vinyl compounds can also be catalyzed efficiently on proper conditions

the yields of the products were more than 70%.Chlorobenzene reacts with styrene to give the moderate yield of 78%.By substituting the chlorobenzene with 4-nitro chlorobenzene

the yield of the product was increased to 80%.Furthermore

the good reusability of PVC-DETA-Pd was also found for Heck reaction.The yield of the stilbene was 74% even if PVC-DETA-Pd was reused five cycles for the model reaction of bromobenzene and styrene.