Regioselective synthesis of calix[4]arene 1,3-di- and monosubstituted sulfur-containing Schiff bases |
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| Authors: | Jing Sun Dong Mei Liu Jin Xiang Wang Chao Guo Yan |
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| Affiliation: | 1. College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
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| Abstract: | Regioselective alkylations of p-tert-butylcalix[4]arene with 3-methoxy-4-ω-chloroalkoxy-benzaldehydes in the system of K2CO3/KI/CH3CN efficiently produce 1,3-di- and monosubstituted aldehydes according to the length of alkyl chains in alkylating reagent, which provides a versatile protocol for preparing calixarene 1,3-di- and sulfur-containing Schiff bases. |
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