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2005
Ring closure reactions
O 0130
Et2AlCl-Promoted Asymmetric Phenylseleno Group Transfer Radical Cyclization
of Unsaturated β-Hydroxy Esters. — The method offers a new, regio- and
20- 034 Reactions
stereoselective approach to cyclopentane, cyclohexane, cycloheptane derivatives and
bicyclic ring systems. It is applied successfully to prepare the hydrogenated naphthalene (XV), a known precursor of natural wilforonide. Additionally, it is shown that optically pure β-hydroxy esters can be synthesized efficiently by lipase-mediated transesterification. — (YANG*, D.; GAO, Q.; ZHENG, B.-F.; ZHU, N.-Y.; J. Org. Chem.
69 (2004) 25, 8821-8828; Dep. Chem., Univ. Hong Kong, Hong Kong, Peop. Rep.
China; Eng.) — Jannicke
2005
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