0000000001315556
AUTHOR
Zhiyong Fu
Synthesis and Conformational Properties of Nonsymmetric Pillar[5]arenes and Their Acetonitrile Inclusion Compounds
The catalytic cyclocondensation of 1-butoxy-4-methoxy-2,5-bis(methoxymethyl)benzene (1d) affords a statistical mixture of the regioisomeric pillar[5]arenes 3a–d in high yield. The alkoxy groups are arranged stereoselectively in a mode so that they avoid steric interactions. The rotation of the benzene rings is, at room temperature, fast in terms of the NMR timescale and leads to a de facto Cs symmetry for 3a–c and a C5h symmetry for 3d. All four structural isomers can encapsulate two CH3CN guest molecules. The structure determinations are based on four crystal structure analyses (constitutions) and NMR spectroscopic measurements (conformations).
Dimerization control in the self-assembly behavior of copillar[5]arenes bearing ω-hydroxyalkoxy groups.
Two novel copillar[5]arenes bearing ω-hydroxyalkoxy groups are synthesized and their self-assembly properties are studied by (1)H NMR spectroscopy, specific viscosity, and X-ray measurements. The copillar[5]arene 2b bearing a 6-hydroxyhexyloxy group exhibits a reversible self-assembly behavior, leading to the formation of the self-inclusion monomer and hugging dimers. The reversible self-assembly behavior can be controlled by tuning solvent, temperature, guest, and H-bond interaction. However, the copillar[5]arene 2a bearing a short 4-hydroxybutyloxy group does not show such a self-assembly behavior to the formation of the self-inclusion monomer and hugging dimers.
CCDC 777752: Experimental Crystal Structure Determination
Related Article: Yuhui Kou, Hongqi Tao, Derong Cao, Zhiyong Fu, D.Schollmeyer, H.Meier|2010|Eur.J.Org.Chem.|2010|6464|doi:10.1002/ejoc.201000718
CCDC 882877: Experimental Crystal Structure Determination
Related Article: Luzhi Liu, Lingyun Wang, Changchun Liu, Zhiyong Fu, Herbert Meier, and Derong Cao|2012|J.Org.Chem.|77|9413|doi:10.1021/jo301779y
CCDC 795257: Experimental Crystal Structure Determination
Related Article: Yuhui Kou, Hongqi Tao, Derong Cao, Zhiyong Fu, D.Schollmeyer, H.Meier|2010|Eur.J.Org.Chem.|2010|6464|doi:10.1002/ejoc.201000718
CCDC 777751: Experimental Crystal Structure Determination
Related Article: Yuhui Kou, Hongqi Tao, Derong Cao, Zhiyong Fu, D.Schollmeyer, H.Meier|2010|Eur.J.Org.Chem.|2010|6464|doi:10.1002/ejoc.201000718
CCDC 777753: Experimental Crystal Structure Determination
Related Article: Yuhui Kou, Hongqi Tao, Derong Cao, Zhiyong Fu, D.Schollmeyer, H.Meier|2010|Eur.J.Org.Chem.|2010|6464|doi:10.1002/ejoc.201000718