1-bromo-4-propylheptane synthesis
- Product Name:1-bromo-4-propylheptane
- CAS Number:133894-35-6
- Molecular formula:C10H21Br
- Molecular Weight:221.18
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Yield:133894-35-6 4.2 g
Reaction Conditions:
with phosphorus tribromide at -15 - 100; for 7 h;Heating;
Steps:
step 6 Halogenation reaction:
Put 3.2 g of 3-propyl n-heptanol with the structural formula (3a) in a three-necked flask, cool to -10 to -15°C, start to add 5.4 g of phosphorus tribromide dropwise, and keep it warm for 4 hours.Spontaneously heat up, react for 2 hours, heat up to 100 °C, react for 1 hour, and stop heating. Reduce to room temperature, add 20ml water and 10ml saturated sodium carbonate solution, stir for 20 minutes,Then add 20mlx3 methyl tert-butyl ether for extraction, combine the organic phases, wash with 20ml of saturated brine, dry with anhydrous sodium sulfate, and concentrate to obtain 4.2g of oily liquid.That is, 3-propyl n-bromoheptane of structural formula (2a) (corresponding to R2 in structural formula (2) is propyl).
References:
CN112047964,2020,A Location in patent:Paragraph 0074; 0075
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