tetrahydro-3-hexyl-4-oxo-(R)-6-undecyl-2H-pyran-2-one → (3S,4S,6R)-3-Hexyltetrahydro-4-hydroxy-6-undecyl-2H-pyran-2-one

Beteiligte Stoffe

Reaktionsschritte

M)c) 8 g of an isomer mixture of tetrahydro-3-hexyl-4-oxo-(R)-6-undecyl-2H-pyran-2-one were dissolved in 2 l of ethyl acetate and 3 g of PtO2 were added. The mixture was then hydrogenated (50 bar) for 12 hours. The catalyst was filtered off and the solution was evaporated. After recrystallization there were obtained 7 g of (3S,4S,6R)-tetrahydro-3-hexyl-4-hydroxy-6-undecyl-2H-pyran-2-one, m.p. 108°-109° C.

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