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N‐Confused Calix[4]pyrroles
Author(s) -
Depraetere Stefaan,
Smet Mario,
Dehaen Wim
Publication year - 1999
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(19991115)38:22<3359::aid-anie3359>3.0.co;2-k
Subject(s) - pyrrole , yield (engineering) , condensation , chemistry , calixarene , organic chemistry , medicinal chemistry , polymer chemistry , molecule , materials science , physics , metallurgy , thermodynamics
Next to the “normal” calix[4]pyrrole 1 , the N‐confused calix[4]pyrrole 2 is formed in substantial amounts (up to 22 % yield) as side product in the acid‐catalyzed condensation reaction of ketones and pyrrole. In some cases, doubly N‐confused calix[4]pyrroles are also formed.