2,3-Butanediol → Butylene carbonate
Reaktionsgleichung
[CH2:1]([OH:6])[CH:2]([OH:5])[CH2:3][CH3:4].[CH3:7][CH:8](O)[CH:9]([OH:11])[CH3:10].ClC(Cl)(Cl)C(C(Cl)(Cl)Cl)=O.[C:23]([O-:26])([O-:25])=[O:24].[K+].[K+]>>[C:9]1(=[O:11])[O:5][CH:2]([CH2:3][CH3:4])[CH2:1][O:6]1.[C:23]1(=[O:26])[O:25][CH:9]([CH3:10])[CH:8]([CH3:7])[O:24]1Komponenten
6
Versuchsvorschrift
Similarly, 1,2-butanediol and 2,3-butanediol were heated with equivalent quantities of hexachloroacetone in the presence of K2CO3 or other such basic catalyst as previously defined to produce comparable yields of 1,2-butylene carbonate and 2,3-butylene carbonate, respectively. Also, 3-chloro-1,2-propanediol was reacted in this way with hexachloroacetone to make 4-(chloromethyl)-1,3-dioxol-2-one (chloromethylethylene carbonate). In the same way, styrene glycol (1-phenyl-1,2-ethanediol) is reacted with hexachloroacetone in the presence of a basic catalyst to produce 1-phenylethylene carbonate (4-phenyl-1,3-dioxol-2-one), 1,2-hexanediol is reacted with hexachloroacetone to produce 1,2-hexylene carbonate (4-butyl-1,3-dioxol-2-one), and 1-cyclohexyl-1,2-ethanediol is reacted with hexachloroacetone to make 4-cyclohexyl-1,3-dioxol-2-one (cyclohexylethylene carbonate).