1. Interplay of Olefin Metathesis and Multiple Hydrogen Bonding Interactions: Covalently Cross-linked Zippers.
- Author
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Zeng, Jisen, Wang, Wei, Deng, Pengchi, Feng, Wen, Zhou, Jingjing, Yang, Yuanyou, Yuan, Lihua, Yamato, Kazuhiro, and Gong, Bing
- Subjects
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ALKENES , *METATHESIS reactions , *HYDROGEN bonding , *THERMODYNAMICS , *MOLECULAR structure , *MOLECULAR self-assembly , *RING formation (Chemistry) , *CATALYSIS - Abstract
Hydrogen-bonded zippers bearing terminal alkene groups were treated with Grubbs’ catalyst, leading to covalently cross-linked zippers without violating H-bonding sequence specificity. The yield of a cross-linked zipper depended on the stability of its H-bonded precursor, with a weakly associating pair giving reasonable yields only at high concentrations while strongly associating pairs showed nearly quantitative yields. The integration of thermodynamic (H-bonding) and kinetic (irreversible CC bond formation) processes suggests the possibility of developing many different covalent association units for constructing molecular structures based on a self-assembling way. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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