Abstract
In a process analogous to use of the Mukaiyama reagent, ω-hydroxyalkyl 2-pyridyl ester derivatives were converted into lactones by N-alkylation or the coordination of copper(II) triflate and transacylation of the resultant electrophilic ω-hydroxyalkanecarboxypyridinium salts.
Key words
lactonization - 2-pyridyl ester - copper(II) triflate - tetrahydroquinolizinone
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