Epichlorohydrin → 2,2-Dimethyl-7-[(oxiran-2-yl)methoxy]-4-phenyl-2H-1-benzopyran

Participants

Reaction Steps

Reaction of 2,2-dimethyl-4-phenyl-2H-chromen-7-ol with epichlorohydrin, by an analogous process to that described in Example 1 gave 7-(2,3-epoxypropoxy)-2,2-dimethyl-4-phenyl-2H-chromene (78%). Reaction of this epoxide with dimethylamine by an analogous process to that described in Example 2 gave 7-(2-hydroxy-3-dimethylaminopropoxy)-2,2-dimethyl-4-phenyl-2H-chromene isolated as its hydrochloride salt (48%), m.p. 208°-209°.

Provenance & Evidence