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2004
Pyrimidine derivatives
R 0510
Asymmetric Synthesis Utilizing Circularly Polarized Light Mediated by the Phoof Chiral Olefins in Conjunction with Asymmetric Autocatalysis.
48- 131 toequilibrium
— Chiral olefins, even with low e.e. values, or racemic olefin BCO, equilibrized by
irradiation with circularly polarized light, act as effective chiral inducers in asymmetric
autocatalysis of the reaction of aldehyde (I) with diisopropylzinc (II). The corresponding alcohol is obtained with high enantioselectivities. Besides olefin BCO, olefins (IV)
and (V) (30—60% e.e.) give alcohol (III) with 90—97% enantiomeric purity. —
(SATO, I.; SUGIE, R.; MATSUEDA, Y.; FURUMURA, Y.; SOAI*, K.; Angew.
Chem., Int. Ed. 43 (2004) 34, 4490-4492; Dep. Appl. Chem., Fac. Sci., Sci. Univ.
Tokyo, Shinjuku, Tokyo 162, Japan; Eng.) — Klein
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