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From Large Furan‐Based Calixarenes to Calixpyrroles and Calix[ n ]furan[ m ]pyrroles: Syntheses and Structures
Author(s) -
Cafeo Grazia,
Kohnke Franz H.,
La Torre Giovanna L.,
White Andrew J. P.,
Williams David J.
Publication year - 2000
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/(sici)1521-3773(20000417)39:8<1496::aid-anie1496>3.0.co;2-i
Subject(s) - furan , calixarene , chemistry , organic chemistry , molecule
The cyclic hexamer obtained by the condensation of furan and acetone can be used as a convenient starting material for the syntheses of calix[6]pyrrole 1 and of several “hybrid systems” containing both furan and pyrrole units. The solid‐state structure of 1 shows a water molecule held inside the cavity by six hydrogen‐bonding interactions, while that of the “alternating” calix[3]furan[3]pyrrole 2 contains no water molecules, despite the macrocycles having a similar structure.