The Novel Syntheses of Photoreversible Cyclobutanocrown Ethers by the Intramolecular Photoaddition of α,ω-Dicinnamoyl Polyethylene Glycol Derivatives
The Novel Syntheses of Photoreversible Cyclobutanocrown Ethers by the Intramolecular Photoaddition of α,ω-Dicinnamoyl Polyethylene Glycol Derivatives
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α,ω-二肉桂酰聚乙二醇衍生物分子内光加成合成光可逆环丁烷冠醚
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发表时间：
1987
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通讯作者：
Sadao. Sato
中科院分区：
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作者：
S. Akabori;Y. Habata;M. Nakazawa;Yoko Yamada;Y. Shindo;T. Sugimura;Sadao. Sato
用 Pyrex 过滤的紫外光照射邻双（3-羟基-1-氧杂丙基）苯和邻双（6-羟基-1,4-二氧己基）苯的二肉桂酸酯在甲醇中的溶液，得到相应的分子内假光二聚冠醚，并且用 220 nm 紫外光照射甲醇中的冠醚，得到相反的开链起始二肉桂酸酯。 1H NMR谱和X射线分析证实分离出的冠醚结构为δ-型。
Irradiation of a solution of dicinnamates of o-bis(3-hydroxy-1-oxapropyl)benzene and o-bis(6-hydroxy-1,4-dioxahexyl)benzene in methanol by Pyrex-filtered UV light gave the corresponding intramolecular pseudophotodimerized crown ethers, and irradiation of the crown ethers in methanol by 220 nm UV light gave the open chain starting dicinnamates in reverse. The structures of the isolated crown ethers were confirmed to be δ-form by the 1H NMR spectra and X-ray analysis.