摘要
设计并合成了一种新型水溶性亚胺双齿配体I,并得到其单晶结构.该配体具有半配位效应和绿色化学特征,与氯化钯组成的催化体系在空气和室温条件下,可有效催化乙醇水溶液中的溴代芳烃与芳基硼酸的Suzuki交叉偶联反应.在n(ArBr)=0.5mmol,n(ArB(OH)2)=0.75mmol,x(PdCl2)=1%,x(I)=2%,n(K2CO3)=1.0mmol,c(EtOH)=50%水溶液的优化条件下,经20min反应,分离收率即可达到99%.
A new air-stable and water-soluble imine ligand (I) has been synthesized and its single crystal structure has been characterized. This N,O-bidentate ligand, with the possible hemilability and the property of green chemistry, is efficient in the palladium-catalyzed Suzuki cross-coupling of aryl bromide and aryl-boronic acid at room temperature in aqueous ethanol. Under the optimized reaction conditions (i.e., n(ArBr) = 0.5 mmol, n(ArB(OH)2) = 0.75 mmol, x(PdCl2) = 1%, x(I) = 2 mol%, n(K2CO3) = 1.0 mmol, and c(EtOH) = 50% aqueous solu-tion), a 99% isolated yield of the product was obtained in 20 min.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
2010年第10期1277-1280,共4页
基金
国家自然科学基金(20976024
20923006)
教育部长江学者和创新团队发展计划(IRT0711)
精细化工国家重点实验室开放课题(KF0801)
大连理工大学理学研究基金及研究生教育改革基金
关键词
SUZUKI反应
交叉偶联
亚胺配体
钯
水相
Suzuki reaction
cross-coupling
imine ligand
palladium
aqueous media