Yn. Polivin et al., REACTION OF 2-METHYL-4,5-DIHYDROFURAN WITH HYDROGEN-CHLORIDE, Bulletin of the Russian Academy of Sciences, Division of Chemical Sciences, 41(9), 1992, pp. 1716-1718
Reaction of 2-methyl-4,5-dihydrofuran with HCl at 0-degrees-C yields 5
'-chloro-2'-pentanone (13%) and (2-methyltetrahydrofuryl-2)-5'-chloro-
2'-pentanone (27%) and at 2000 5-chloro-2-pentanone exclusively.