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Selective inclusion of (S)-2-butanol and (S)-2-methyl-1-butanol from their racemic mixtures in 98.2 and 98.4 % ee, respectively, is obtained with the robust 3D enantiopure hybrid organic–inorganic zeolite analogue [Cd(QA)2] (see scheme), which is formed by self-assembly of chiral quitenine (HQA) with Cd(OH)2.
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Xiong et al. (2001) studied this question.
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