| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
Helical poly(quinoxaline-2,3-diyl)s bearing (S)-1-(alkoxycarbonyl)ethoxymethyl side chains derived from natural L-lactic acid were synthesized to develop new asymmetric catalysts in aqueous solution. In ether solvents, the handedness of the helical chirality of the polymer backbone depends on the length of the alkyl chain in the lactate alkoxy groups. A single-handed copolymer bearing both the pentyl lactate moieties and diphenylphosphino groups also exhibited helix inversion by the choice of ether solvents resulting in the production either R- or S-enantiomers with high enantiomeric excesses in the mixed solvent of ethers and water.
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