تفاعل #161313

معادلة التفاعل

n-Hexanal

glycerol

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n-Hexanal Glycerol

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المعالجة

1. 1
   أخرىpurged with nitrogen three times
2. 2
   درجة الحرارةThe reaction mixture forms two phases upon cooling
3. 3
   أخرىconsumption of n-hexanal

الإجراء التجريبي

n-Hexanal (10.0 g, 12.3 ml, 0.1 mol), glycerol (92.09 g, 73.7 ml, 1 mol), and 10% Pd/C (5 wt %, 0.50 g) are charged to a Parr reactor, purged with nitrogen three times, heated to 200° C. with stirring and run at 1000 psi of hydrogen for 8 hrs. The reaction mixture forms two phases upon cooling. GC analysis of each phase shows complete consumption of n-hexanal. Bottom phase (glycerol): glycerol monoethers 3-hexoxy-1,2-propanediol and 2-hexoxy-1,2-propanediol (70.6%, ratio 7.8), glycerol diethers 1,3-dihexoxy-2-propanol and 2,3-dihexoxy-1-propanol (12.8%), n-hexanol (3.7%). Top phase (crude product): glycerol monoethers 3-hexoxy-1,2-propanediol and 2-hexoxy-1,2-propanediol (57.2%, ratio 8.4), glycerol diethers 1,3-dihexoxy-2-propanol and 2,3-dihexoxy-1-propanol (18.5%), n-hexanol (3.1%).

المصدر