Chang HT, Jeganmohan M, Cheng CH. One-pot synthesis of benzolactones and lactams via a cobalt-catalyzed regioselective [2 + 2 + 2] cocyclotrimerization of alkynyl alcohols and amines with propiolates.
Chem Commun (Camb) 2005:4955-7. [PMID:
16205812 DOI:
10.1039/b509731b]
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Abstract
An efficient method for the synthesis of benzolactones and benzolactams via a cobalt-catalyzed [2 + 2 + 2] cocyclotrimerization of alkynyl alcohols and alkynyl amines with propiolates is described.
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