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ChemInform Abstract: Calix[4]pyridine: A New Arrival in the Heterocalixarene Family.

✍ Scribed by V. KRAL; P. A. GALE; P. JUN. ANZENBACHER; K. JURSIKOVA; V. LYNCH; J. L. SESSLER

Publisher: John Wiley and Sons
Year: 2010
Weight: 29 KB
Volume: 29
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199818153

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✦ Synopsis

A universal and easy method for the preparation of calixpyridinopyrroles, e.g. (I), and calixpyridines such as (II) proceeds by reaction of meso-octamethylcalix[4]pyrrole with dichlorocarbene via ring expansion of pyrrole. Isomers are present in the reaction mixture, since the intermediate dichlorocarbene formed can insert into either of the two double bonds present in each of the various pyrrole rings under attack. -(KRAL, V.; GALE, P.

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