The treatment ofC-iso-butylpyrogallarene (PgC4) orC-ethylpyrogallarene (PgC2) with ferrocene (FcH) in a 2:1 molar ratio under different reaction conditions afforded the host–guest compounds FcH@(PgC4)2·CH3OH·3H2O (1) and FcH@(PgC2)2·3EtOH·2H2O (2), respectively. Complexes1and2are both pyrogallarene dimers providing capsule-type voids. Single crystal X-ray crystallography was used to investigate the role of hydrogen bonding networks in the assembly of the two host–guest systems.
We report herein the observation of a hexameric structure of a hydroxyresorc[4]arene in the solid state, enclosing a large interior space. This artificial molecular container is stabilized only by hydrogen bonds. The tendency to form aggregates in solution is demonstrated mainly by means of ESI-MS methods.
Microwave-assisted synthesis of resorcin[4]arene and pyrogallol[4]arene macrocycles
作者:Muriel Funck、Daniel P. Guest、Gareth W.V. Cave
DOI:10.1016/j.tetlet.2010.09.115
日期:2010.12
A series of resorcin[4]arene and pyrogallol[4]arene macrocycles have been synthesized efficiently within 5 min, affording crystalline products suitable for single crystal X-ray diffraction, utilising microwave irradiation in a 'one-pot' reaction whilst controlling the selective formation of the rccc cone stereoisomer. (C) 2010 Elsevier Ltd. All rights reserved.