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Formation of Optically Active (bipy = 2,2'-bipyridyl) by Photodissociation of Cl2 in Dichloromethane

DOI: 10.1039/DT9940002085

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 2085 - 2090 (1994)

Update date:2022-08-17

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Authors:

Yamagishi, AkihikoYamagishi, Akihiko

Naing, KyawNaing, Kyaw

Goto, YasutomoGoto, Yasutomo

Taniguchi, MasahiroTaniguchi, Masahiro

Takahashi, MasayukiTakahashi, Masayuki

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Article abstract of DOI:10.1039/DT9940002085

An optically active bis-chelated complex, (bipy = 2,2'-bipyridyl), has been obtained when enantiomeric Cl2 was illuminated by visible light in dichloromethane.From the dependence of the optical purity of the product on light intensity, it is proposed that the reaction from Δ-Cl2 to Δ- (chirality retention) proceeds by way of the dissociation of a monodentate ligand, bipy*, from a photoactivated intermediate, Δ-*)Cl>Cl in the dark, while the reaction to Λ- (chirality inversion) involves the further photoactivated configurational change of Δ-*)Cl>Cl to Λ-*)Cl>Cl.Racemization is avoided under the conditions of weak light and high temperature.The synthetic value of optically active as a chiral intermediate has been exemplified by preparing a new chiral amphiphilic ruthenium(II) complex.

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Product name:CIS-DICHLOROBIS(2,2'-BIPYRIDINE)RUTHENIUM (II) DIHYDRATE, 99

Cas No:15746-57-3

15746-57-3

R&D Labs maybe for 15746-57-3

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