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KMID : 1059520100540060727
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Journal of the Korean Chemical Society
2010 Volume.54 No. 6 p.727 ~ p.730
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A New Asymmetric Photoisomerization of 2,3-Dihydropyrrolo[1,2-b]benzisothiazole 5,5-Dioxides
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Elghamry, Ibrahim
Dopp, Dietrich
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Abstract
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A tricyclic ring system bearing new stereogenic center namely 2,3-dihydro[1]benzothieno[3,2-b]pyrrole 4,4-dioxide was synthesized by asymmetric photoisomerization of 2,3-dihydropyrrolo[1,2-b]benzisothiazole 5,5-dioxide by irradiation with 245 nm emission of the low-pressure mercury lamp. The chemical structure and the purity of the photoproduct were delineated preliminarily by IR, NMR, and MS and finally confirmed by single crystal X-ray crystallography.
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KEYWORD
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Photoisomerization, Stereoselectivity, Photodeconjugation, Stereogenic center
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