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2005
Ring closure reactions
O 0130
Catalytic Asymmetric Mercuriocyclization of γ-Hydroxy-cis-alkenes. — A highly
catalytic mercuriocyclization of E-γ-hydroxyalkenes is presented,
11- 057 enantioselective
involving Hg(O-Ac)2 in the presence of catalytic amounts of Hg(O-CO-CF3)2—chiral
bisoxazoline. The reaction affords 2-monosubstituted tetrahydrofurans (II), (IV) in
good yields and up to 95% optical purity. The newly developed reaction conditions can
also be applied for the kinetic resolution of a racemic terminal alkene (VII). —
(KANG*, S. H.; KIM, M.; KANG, S. Y.; Angew. Chem., Int. Ed. 43 (2004) 45,
6177-6180; Dep. Chem., Cent. Mol. Des. Synth., Korea Adv. Inst. Sci. Technol.,
Taejon 305-701, S. Korea; Eng.) — Mischke
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