A New Asymmetric Carbon-Carbon Bond Forming Reaction: Four-Component Stereoselective Synthesis of (Z)-4,6-Dihydroxy-3-methylalk-2-enyl Methyl Sulfones This work was supported by the Swiss National Science Foundation.
Narkevitch et al.
Angewandte Chemie (International ed. in English), 39(10), 1806-1808 (2000-08-10)
The Journal of organic chemistry, 70(21), 8352-8363 (2005-10-08)
Three natural pyrrolizidines, (+)-amphorogynines A and D and (+)-retronecine, have been prepared from a common lactam intermediate. This central compound, in turn, was synthesized in diastereomerically enriched form through a highly selective [2 + 2]-cycloaddition of dichloroketene with a chiral
Hamel, M., et al.
Tetrahedron Asymmetry, 16, 3406-3415 (2005)
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