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Front Cover: Synthesis and Binding Studies of a Tetra‐α Aryl‐Extended Photoresponsive Calix[4]pyrrole Receptor Bearing meso ‐Alkyl Substituents (Eur. J. Org. Chem. 9/2018)
Author(s) -
Escobar Luis,
Arroyave Frank A.,
Ballester Pablo
Publication year - 2018
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.201800173
Subject(s) - chemistry , substituent , biphenyl , pyrrole , alkyl , aryl , photostationary state , stereochemistry , medicinal chemistry , polymer chemistry , photoisomerization , organic chemistry , isomerization , catalysis
The Front Cover shows two isomeric tetraazobenzene calix[4]pyrroles with a bound guest. The all‐trans complex (lower left) is exclusively obtained after thermal equilibration. The biphenyl unit of the bound guest is fully included in the aromatic cavity of the all‐trans receptor. Light irradiation produced a mixture of cis‐enriched counterparts. At the photostationary state, the all‐cis complex (upper right) accounts for more than 80 % of the mixture. In this complex, the terminal phenyl substituent of the included guest is totally exposed to the bulk solution. More information can be found in the Full Paper by P. Ballester et al.