2,3-Dibromopropene synthesis
- Product Name:2,3-Dibromopropene
- CAS Number:513-31-5
- Molecular formula:C3H4Br2
- Molecular Weight:199.87
107-19-7
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$12.00/25g
106-96-7
330 suppliers
$30.00/25g
627-15-6
26 suppliers
$97.50/5g
513-31-5
171 suppliers
$16.00/1g
Yield:106-96-7 64.37% ，513-31-5 10.26% ，627-15-6 2.54%
Reaction Conditions:
with phosphorus tribromide in isopar C at 6 - 50; for 3.71667 h;Product distribution / selectivity;
Steps:
1 Example 1
Example 1 Isopar C (343 g) was charged to a reactor.propargyl alcohol (175 g, 3.1 mol) and phosphorus tribromide (295.7 g, 1.09 mol) were fed separately but concurrently to the reactor at feed rates of about 2.5 ML/minute, while maintaining the temperature of the reaction mixture in the reactor at 6° C. Addition lasted for about 43 minutes, during which time this reaction mixture was stirred at a rate of 17 rpm.The reaction mixture was warmed to 50° C. and allowed to ride, with stirring, for 3 hours at 50° C. The mixture was then washed twice with water (10.7 g and 10 g), and the solution was allowed to stand to form aqueous and organic layers; the layers were separated.The organic layer was analyzed by NNMR. The yield of propargyl bromide was 64.37%.The solution also contained 10.26% 2,3-dibromopropene, 2.54% 1,3-dibromopropene, but no bromoallene.
References:
Mero, Christopher L.;Elnagar, Hassan Y.;Herndon JR., Robert C. US2004/44259, 2004, A1 Location in patent:Page 3
96-11-7
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513-31-5
171 suppliers
$16.00/1g
107-19-7
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$12.00/25g
10024-18-7
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106-96-7
330 suppliers
$30.00/25g
627-15-6
26 suppliers
$97.50/5g
513-31-5
171 suppliers
$16.00/1g
780-25-6
52 suppliers
$51.60/5g
106-96-7
330 suppliers
$30.00/25g
5700-60-7
83 suppliers
$207.03/10g
513-31-5
171 suppliers
$16.00/1g
106-96-7
330 suppliers
$30.00/25g
513-31-5
171 suppliers
$16.00/1g