Pentane, 3,3-dibromo- synthesis
- Product Name:Pentane, 3,3-dibromo-
- CAS Number:54653-27-9
- Molecular formula:C5H10Br2
- Molecular Weight:229.94
96-22-0
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Yield:54653-27-9 83.7 %
Reaction Conditions:
with triphenyl phosphite;bromine in dichloromethane at -30 - 20;Inert atmosphere;
Steps:
5 Example 5
General procedure: Under the protection of nitrogen, dissolve 68.3g (0.22mol) of triphenylphosphine in dichloromethane, lower the temperature to -25°C, control the temperature at -25-20°C, slowly add 35.2g (0.22mol) of bromine, and then Slowly add 26.8 g (0.2 mol) of 1-phenyl-2-butanone, react for 2 hours, the reaction solution is warmed to room temperature, react for 2 hours, concentrate under reduced pressure, filter most of the triphenylphosphine, and pass the rest through the column layer 45.8 g of dibromo-2,2-phenyl-1-propane was obtained by analysis, HPLC95.7%, yield 82.4%
References:
CN115160102,2022,A Location in patent:Paragraph 0037-0041
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