共 64 条
- [61] Xie SF, 1999, BIOTECHNOL BIOENG, V62, P30, DOI 10.1002/(SICI)1097-0290(19990105)62:1<30::AID-BIT4>3.0.CO
- [62] 2-E
- [63] Yao Q., 2003, Angew. Chem, V115, P3517
Ionically Tagged Ru-Alkylidenes for Metathesis Reactions under Biphasic Liquid-Liquid Conditions
被引：15
作者：
Autenrieth, Benjamin
[1
]
Willig, Felix
[1
]
Pursley, Dominik
[1
]
Naumann, Stefan
[1
]
Buchmeiser, Michael R.
[1
,2
]
机构：
[1] Univ Stuttgart, Inst Polymerchem, Lehrstuhl Makromol Stoffe & Faserchem, D-70569 Stuttgart, Germany
[2] Inst Textilchem & Chemiefasern ITCF Denkendorf, D-73770 Denkendorf, Germany
来源：
关键词：
biphasic catalysis;
heterogeneous catalysis;
ionic liquids;
metathesis;
ruthenium;
RUTHENIUM CARBENE COMPLEX;
RING-OPENING METATHESIS;
OLEFIN METATHESIS;
CATALYZED CYCLOPOLYMERIZATION;
RECYCLABLE CATALYST;
REACTIVITY;
LIGANDS;
IMMOBILIZATION;
IMIDAZOLIUM;
ROBUST;
D O I：
10.1002/cctc.201300199
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ;
081704 ;
摘要：
The synthesis of the novel ionic Ru-alkylidenes [Ru[(4-CO2)(1-CH3)Py+)](2)(IMesH(2))(CH-2-(2-PrO)-C6H4)][OTf-](2) (1, IMesH(2)=1,3-dimesitylimidazolin-2-ylidene, Py=pyridine, OTf-=triflate) and [RuCl[(4-CO2)(1-CH3)Py+)](IMesH(2))(CH-2-(2-PrO)-C6H4)][OTf-] (2) is reported. Catalysts 1 and 2 were successfully used in various metathesis reactions under biphasic liquid-liquid conditions using 1-butyl-2,3-dimethylimidazolium tetrafluoroborate and heptane as liquid phases. Ruthenium leaching into the heptane phase was very low (<0.4%), translating into Ru contamination of the products between 0.3 and 2.5ppm. Both 1 and 2 exhibited comparable reactivity in organic solvents and under biphasic conditions. Catalyst 1 and 2 were also successfully used in the continuous metathesis of methyl oleate and 1,7-octadiene under supported liquid-liquid conditions. Finally, the disproportionation of the monocarboxylato monochloro substituted Ru-alkylidene 2 was traced by (HNMR)-H-1 analysis at 40 degrees C, thereby demonstrating the formation of complex 1 and the neutral complex [RuCl2(IMesH(2))(CH-2-(2-PrO)-C6H4)].
引用
收藏
页码：3033 / 3040
页数：8
相关论文