Ethyl Acetate → methyl 5-formyl-(R)-3-[(tetrahydro-2H-pyran-2-yl)oxy]-pentanecarboxylate

Beteiligte Stoffe

Reaktionsschritte

A solution of 2.56 g of methyl (R)-3-[(tetrahydro-2H-pyran-2-yl)oxy]-6-heptenoate in 40 ml of ethyl acetate is treated with ozone at -75° C. After the reaction has finished 0.1 g of Pd-on-carbon is added thereto and the mixture is hydrogenated at room temperature. After the hydrogen uptake has finished one filters off the catalyst, washes with ethyl acetate and evaporates in vacuo. There is obtained crude methyl 5-formyl-(R)-3-[(tetrahydro-2H-pyran-2-yl)oxy]-pentanecarboxylate.

Herkunft & Nachweise