Synthesis of Homopropargyl Cycloalkanols by Pd-Catalyzed Samarium Diiodide-Promoted Intramolecular Coupling of Alkynyl Esters with Aldehydes and Ketones
摘要:
Treatment of 1-(4-oxoalkyl)-2-alkynyl esters with SmI2/Pd-0 results in intramolecular cyclization to afford homopropargyl cycloalkanols. The same products are also obtained starting from isomeric gamma-alkynyl-substituted lactol esters.