Ej. Enholm et Ja. Schreier, A DIRECT SYNTHESIS OF ALPHA-KETO 5-MEMBERED AND 6-MEMBERED CYCLIC ETHERS, Journal of heterocyclic chemistry, 32(1), 1995, pp. 109-111
A simple synthesis of tetrahydro-2H-pyran-2-yl and tetrahydrofuran-2-y
l ketones from their corresponding carboxylic acids was studied. A com
parison was made of organolithium and Grignard alkylating reagents as
a means of reducing the formation of byproducts and improving the yiel
ds.