Facile syntheses of homothia- and homoazacalixarenes
Decahomotetrathiacalix[6]arenes were conveniently prepared from the 2:2 cyclization reactions of bis(chloromethyl)phenol-formaldehyde trimers with 1,2-ethanedithiol in high yields. In contrast, the similar reactions of the trimers with 1,3-propanedithiol
Ito,Nagai,Ohba,Sone
p. 1121 - 1128
(2007/10/03)
Facile synthesis of calix[5]arenes with three different upper rim substituents
Four calix[5]arenes, which have three different substituents at the upper rim of calix, are synthesized by the '3 + 2' fragmentation condensation reaction. An equimolar mixture of p-substituted phenol trimer (BCB) and 2,2'-bishydroxymethyl p-substituted p
No, Kwanghyun,Kwon, Kyoung Mee
p. 1293 - 1295
(2007/10/03)
Facile synthesis of calix[4]arenes in ABAC type upper rim substitution
Calix[4]arenes with three different substituents in ABAC pattern at the upper rim of calix are synthesized by '3 + 1' fragmentation condensation reaction between trimer of p-substituted phenol (ABA) and 2,6-bishydroxymethylated p-substituted phenol (C).
Kwanghyun, No,Jong, Eun Kim,Kyoung, Mee Kwon
p. 8453 - 8456
(2007/10/02)
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