T. Eszenyi et al., ON THE FORMATION OF 3,4-DICHLORO-2,2-DIMETHYL-2H-CHROMENES FROM 2,2-DIMETHYL-4-CHROMANONES, Heterocyclic communications, 4(2), 1998, pp. 155-156
The reaction of 7-methoxy-2,2-dimethyl-4-chromanone and PCl5 is reinve
stigated. The product distributions for the reactions of several aceto
xy derivatives of 2,2-dimethyl-4-chromanones and PCl5 have been studie
d to confirm an extended pathway.