熵控超分子光致手性生成：全甲基化的6-O-苯甲酰基-β-环糊精包合并敏化的环辛烯的Z-E光异构化对映体分化
Entropy-controlled supramolecular photochirogenesis: enantiodifferentiating Z-E photoisomerization of cyclooctene included and sensitized by permethylated 6-O-benzoyl-beta-cyclodextrin.
作者信息
Fukuhara Gaku, Mori Tadashi, Wada Takehiko, Inoue Yoshihisa
机构信息
Department of Molecular Chemistry, 2-1 Yamada-oka, Suita 565-0871, Japan.
出版信息
Chem Commun (Camb). 2005 Sep 7(33):4199-201. doi: 10.1039/b504948b. Epub 2005 Jul 21.
DOI:10.1039/b504948b
PMID:16100602
Abstract
In contrast to the photosensitization with a non-methylated analogue, supramolecular photochirogenesis with a novel permethylated mono(6-O-benzoyl)-beta-cyclodextrin exhibited a critical dependence of the product's enantiomeric excess upon temperature, and possessed a large differential entropy of activation (-11 J K(-1) mol(-1)) for which the flexible host skeleton is likely to be responsible.
摘要
与非甲基化类似物的光敏化不同，新型全甲基化单（6-O-苯甲酰基）-β-环糊精的超分子光致手性生成表现出产物对映体过量对温度的关键依赖性，并且具有较大的活化熵差（-11 J K⁻¹ mol⁻¹），这可能是由柔性主体骨架导致的。
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