Intramolecular cyclization of N,N-di(oligooxyethylene)amines: A new synthesis of monoaza crown ethers |
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| Authors: | Hirokazu Maeda Shigeo Furuyoshi Yohji Nakatsuji Mitsuo Okahara |
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| Institution: | Department of Applied Chemistry, Faculty of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, Japan |
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| Abstract: | The reaction of N,N-di(oligooxyethylene)amines with arenesulfonyl chloride in the presence of alkali metal hydroxide was investigate. It was found that the monoarenesulfonates of N,N-di(oligooxyethylene)amines were first formed as intermediates, and their subsequent intramolecular cyclization gave N-unsubstituted monoaza crown ethers rather selectively. |
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