Synthesis of 3-substituted indolizidines from amino-ynones derivatives
Tetrahedron Letters（2016）
Abstract
•Indolizidine derivatives were efficiently obtained from amino-ynones.•With methane sulfonic acid, amino-ynones furnished vinylogues of indolizidin-3-ones.•In the presence of zinc chloride cyclization of amino-ynones produced stable enynes zinc complexes.•Reduction of enynes zinc complexes produced 3-alkynyl indolizidines.
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Key words
Amino-ynone,Indolizidine,Methanesulfonic acid,Zinc chloride
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