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Citation: SU Xin-Yan, WU Lei, XU Hong-Yao. Synthesis of Stilbene Derivatives with Long Conjugated Structure by Pd-catalyzed Heck Reaction[J]. Chinese Journal of Applied Chemistry, ;2008, 25(12): 1487-1489. shu

Synthesis of Stilbene Derivatives with Long Conjugated Structure by Pd-catalyzed Heck Reaction

1.
College of Materials Science and Engineering & State Key Laboratory for Modification of Chemical Fibers and Polymeric Materials, Donghua University, Shanghai 201620

Corresponding author: XU Hong-Yao,
Received Date: 29 September 2007
Available Online: 7 January 2008
Fund Project: 国家自然科学基金(90606011和50472038) (90606011和50472038)教育部"国家新世纪优秀人才支持计划"(NCET-04-0588)资助项目 (NCET-04-0588)

Six stilbene derivatives were synthesized by Heck reaction with yields of 68%~84%.The influence of the reactant structure on the yield of the Heck reaction was investigated.The optimal results were obtained at 120℃ reaction temperature with a DMF and Et₃N mixture(2:1,V/V) as the solvent.It was also found that the yield decreased with decrease of the electron density on the double bond of the molecule(4-methylstyrene >styrene >4-vinyl pyridine);the reactivity of the halogen was in the order of NO₂-Ar-Br >H-Ar-Br >CH₃-Ar-Brr.
- Heck reaction,
- stilbene derivatives,
- Pd-catalyst
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