terephthalic acid 1-methyl ester 4-(2,4,4,5,7-pentamethyl-4H-chromen-6-yl) ester

Base Information

Chemical Name:terephthalic acid 1-methyl ester 4-(2,4,4,5,7-pentamethyl-4H-chromen-6-yl) ester
CAS No.:203856-42-2
Molecular Formula:C₂₃H₂₄O₅
Molecular Weight:380.441
Hs Code.:

terephthalic acid 1-methyl ester 4-(2,4,4,5,7-pentamethyl-4<i>H</i>-chromen-6-yl) ester

Synonyms:terephthalic acid 1-methyl ester 4-(2,4,4,5,7-pentamethyl-4H-chromen-6-yl) ester

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Chemical Property of terephthalic acid 1-methyl ester 4-(2,4,4,5,7-pentamethyl-4H-chromen-6-yl) ester

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Technology Process of terephthalic acid 1-methyl ester 4-(2,4,4,5,7-pentamethyl-4H-chromen-6-yl) ester

There total 3 articles about terephthalic acid 1-methyl ester 4-(2,4,4,5,7-pentamethyl-4H-chromen-6-yl) ester which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 50.0%

: 1679-64-7
Monomethyl terephthalate

: 203856-41-1
6-hydroxy-2,4,4,5,7-pentamethyl-4H-1-benzopyran

: 203856-42-2
terephthalic acid 1-methyl ester 4-(2,4,4,5,7-pentamethyl-4H-chromen-6-yl) ester

Guidance literature:: With dmap; dicyclohexyl-carbodiimide; In dichloromethane; at 20 ℃; for 24h;
DOI:10.1021/jm990292i

Reference yield:

: 50442-68-7
6-hydroxy-4,4,5,7-tetramethyl-3,4-dihydrocoumarin

: 203856-42-2
terephthalic acid 1-methyl ester 4-(2,4,4,5,7-pentamethyl-4H-chromen-6-yl) ester

Guidance literature:: Multi-step reaction with 3 steps

1: 54 percent / diethyl ether / 48 h / 20 °C

2: 89 percent / p-toluenesulfonic acid; 4 Angstroem molecular sieves / toluene / 2 h / Heating

3: 50 percent / dicyclohexylcarbodiimide; DMAP / CH₂Cl₂ / 24 h / 20 °C

With dmap; 4 A molecular sieve; toluene-4-sulfonic acid; dicyclohexyl-carbodiimide; In diethyl ether; dichloromethane; toluene; 1: Addition / 2: Dehydration / 3: Esterification;
DOI:10.1021/jm990292i

Reference yield:

: 203856-40-0
2,3-dihydro-2,6-dihydroxy-2,4,4,5,7-pentamethyl-2H-benzopyran

: 203856-42-2
terephthalic acid 1-methyl ester 4-(2,4,4,5,7-pentamethyl-4H-chromen-6-yl) ester

Guidance literature:: Multi-step reaction with 2 steps

1: 89 percent / p-toluenesulfonic acid; 4 Angstroem molecular sieves / toluene / 2 h / Heating

2: 50 percent / dicyclohexylcarbodiimide; DMAP / CH₂Cl₂ / 24 h / 20 °C

With dmap; 4 A molecular sieve; toluene-4-sulfonic acid; dicyclohexyl-carbodiimide; In dichloromethane; toluene; 1: Dehydration / 2: Esterification;
DOI:10.1021/jm990292i