ChemicalBook CAS DataBase List Light Stabilizer 770

Light Stabilizer 770 synthesis

4synthesis methods

Product Name:Light Stabilizer 770
CAS Number:52829-07-9
Molecular formula:C28H52N2O4
Molecular Weight:480.72

2403-88-5 Synthesis

2403-88-5
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$5.00/10g

106-79-6 Synthesis

106-79-6
297 suppliers
$6.00/25g

52829-07-9
366 suppliers
$5.00/25g

Yield:-

Reaction Conditions:

with 1-methyl-pyrrolidin-2-one

Steps:

2 Example 2

Example 2 To a reaction vessel equipped with a mechanical stirrer, a thermometer, a condenser maintained at 70°C, a trap and nitrogen sparge tube are added dimethylsebacate (25 g, 109 mmoles), 2,2,6,6-tetramethyl-4-hydroxypiperidine (37.5 g, 239 mmoles) and N-methylpyrrolidinone (7 ml) and heated to 100°C. Then lithium amide (0.124 g, 5.4 mmoles) is added with agitation and the reaction mixture is heated to 150-155°C for 3 hours at atmospheric pressure. During this period, nitrogen is continuously introduced subsurface at a rate of 0.5 L/min. to remove the generated methanol. The completed reaction mass is then cooled down to 100°C and neutralized with glacial acetic acid. Analysis by gas chromatography indicated that 99% of bis(2,2,6,6-tetramethyl-4-piperidinyl)sebacate is obtained, based on the dimethylsebacate.

References:

EP510625,1992,A1

2403-88-5 Synthesis

2403-88-5
338 suppliers
$5.00/10g

111-20-6 Synthesis