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Regioselective synthesis of calix[4]arene 1,3-di- and monosubstituted sulfur-containing Schiff bases

✍ Scribed by Jing Sun; Dong Mei Liu; Jin Xiang Wang; Chao Guo Yan


Publisher
Springer Netherlands
Year
2009
Tongue
English
Weight
352 KB
Volume
64
Category
Article
ISSN
0923-0750

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## Abstract Four __p‐tert__‐butylcalix[4]arene derivatives with different Schiff base groups at the lower rim were efficiently prepared in three steps. __p‐tert__‐Butylcalix[4]arene was firstly __O‐__peralkylated with __Ο‰__‐haloalkylphthalimide in the system of NaH/DMF to give calixarene tetraalkyl