J. Chem. Soc., Perkin Trans. 1

A diastereoselective cobalt-mediated synthesis of benzopyrans using a novel variation of an intramolecular Nicholas reaction in the key cyclisation step: optimisation …

A Mann, C Muller, E Tyrrell

文献索引：Mann, Alastair; Muller, Christophe; Tyrrell, Elizabeth Journal of the Chemical Society - Perkin Transactions 1, 1998 , # 8 p. 1427 - 1438

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被引用次数: 2

摘要

A range of novel intramolecular cyclisation reactions between an organocobalt stabilised cation and a trisubstituted alkene have been accomplished that provide a concise route for the diastereoselective synthesis of a range of functionalised benzopyrans. In addition to the usual Lewis acids employed in the Nicholas