Surface-assisted diastereoselective Ullmann coupling of bishelicenes

被引：31
|
作者：
Wackerlin, Christian [1 ]
Li, Jingyi [1 ]
Mairena, Anais [1 ]
Martin, Kevin [2 ]
Avarvari, Narcis [2 ]
Ernst, Karl-Heinz [1 ,3 ]
机构：
[1] Empa, Swiss Fed Labs Mat Sci & Technol, Uberlandstr 129, CH-8600 Dubendorf, Switzerland
[2] Univ Angers, Lab Moltech Anjou, Angers, France
[3] Univ Zurich, Dept Chem, Zurich, Switzerland
来源：
CHEMICAL COMMUNICATIONS | 2016年 / 52卷 / 86期
关键词：
SCANNING-TUNNELING-MICROSCOPY; GRAPHENE NANORIBBONS; MOLECULAR CHIRALITY; METAL-SURFACES; POLYMERIZATION; COVALENT; POLYTHIOPHENE; MONOLAYERS; HELICENES; BIPHENYL;
D O I：
10.1039/c6cc05849c
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Ullmann coupling of chiral 2-bromo[4] helicene has been performed on a Cu(100) surface. Only homochiral 2,20-bis[4] helicene as the product is observed using STM. Such stereoselectivity is based on the fact that the surface will favour a configuration with the central part of the molecule on the surface, causing the outer ends to spiral away from the surface.
引用
收藏
页码：12694 / 12697
页数：4
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