ChemicalBook CAS DataBase List Benzenepropanoic acid, 3-(2H-benzotriazol-2-yl)-5-(1,1-dimethylethyl)-4-hydroxy-, methyl ester

Benzenepropanoic acid, 3-(2H-benzotriazol-2-yl)-5-(1,1-dimethylethyl)-4-hydroxy-, methyl ester synthesis

5synthesis methods

Product Name:Benzenepropanoic acid, 3-(2H-benzotriazol-2-yl)-5-(1,1-dimethylethyl)-4-hydroxy-, methyl ester
CAS Number:84268-33-7
Molecular formula:C20H23N3O3
Molecular Weight:353.41

67-56-1 Synthesis

67-56-1
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Benzenepropanoic acid, 3-(2H-benzotriazol-2-yl)-5-(1,1-dimethylethyl)-4-hydroxy-

84268-36-0
32 suppliers
$128.00/5mg

Benzenepropanoic acid, 3-(2H-benzotriazol-2-yl)-5-(1,1-dimethylethyl)-4-hydroxy-, methyl ester

84268-33-7
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Yield: 99%

Reaction Conditions:

with silica-supported methanesulfonic acid at 55; for 2 h;Large scale;Reagent/catalyst;Temperature;Time;

Steps:

1-10 Example 1
Put 1000g of 3-[3-(benzotriazol-2-yl)-4-hydroxy-5-tert-butylphenyl]-propionic acid, 1000g of methanol and 10g of silica-supported methanesulfonic acid into the reaction In the kettle, react at 55°C for 2 hours, After the reaction is over, 3-[3-(benzotriazol-2-yl)-4-hydroxy-5-tert-butylphenyl]-propionic acid methyl ester is obtained after separation. The product yield is 99%, and the Luminous rate: 99.0%. Among them, after the catalyst was applied 5 times, the product yield was 98.9%, and the light transmittance was 98.5%.

References:

CN113444054, 2021, A Location in patent:Paragraph 0018-0030

6386-38-5 Synthesis