Journal of the Chemical Society. Perkin transactions I p. 747 - 755 (1991)
Update date:2022-08-02
Topics:
Ellis, Martin K.
Golding, Bernard T.
Maude, Antony B.
Watson, William P.
The epichlorohydrin (R)-(chloromethyl)oxirane has been prepared from rac-3-chloropropane-1,2-diol by means of the chiral ketone D-camphorquinone (1,7,7-trimethylbicyclo<2.2.1>heptane-2,3-dione).These reactions lead to intermediate dioxolanes which can be converted directly into oxiranes.This conversion was effected by reduction of the C-2-ketone of the dioxolane intermediate with sodium borohydride prior to reaction with hydrogen bromide-acetic acid followed by treatment of the resulting acetoxy bromide with sodium ethane-1,2-diolate.The diastereoselective formation of other dioxolanes was also investigated by reaction of D-camphorquinone with ethane-1,2-diol, propane-1,2-diol, and 3,3-dimethylbutane-1,2-diol.
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