Enantiodifferentiating [4+4] photocyclodimerization of 2-anthracenecarboxylate mediated by a self-assembled iron tetrahedral coordination cage
Enantiodifferentiating [4+4] photocyclodimerization of 2-anthracenecarboxylate mediated by a self-assembled iron tetrahedral coordination cage
复制标题
自组装铁四面体配位笼介导的2-蒽甲酸酯的对映分化[4 4]光环二聚化
DOI：
10.1016/j.jphotochem.2015.10.023
复制
发表时间：
2016-12-01
影响因子：
4.3
通讯作者：
Yang, Cheng
中科院分区：
文献类型：
--
作者：
Alagesan, Mani;Kanagaraj, Kuppusamy;Yang, Cheng
Photochirogenesis through supramolecular assembly provides an intriguing approach to the highly challenging research field of chiral photochemistry. In the present paper, an enantiopure coordination self-assembly cage (cage T) has been employed for mediating the enantiodifferentiating [4+4] photocyclodimerization of 2-anthracenecarboxylate (AC) in aqueous medium. The complexing behavior of AC with the cage T has been investigated by UV-vis, circular dichroism and NMR spectral studies. It was found that in aqueous solution, cage T could form both 1:1 and 1:2 host-guest complexes with AC. Photocyclodimerization of AC mediated by cage T were studied, at different temperatures and different host/guest ratios. The anti-HT photodimer dominate the photocyclodimerization of AC with cage T. In the presence of an enantiopure cage T, the chiral syn-HT and anti-HH photodimers were produced in moderate enantioselectivity. The enantiodifferentiating mechanism of this supramolecular photochirogenesis system and the effects of external factors are discussed. (C) 2016 Published by Elsevier B.V.
