2H,8H-Benzo[1,2-b:3,4-b']dipyran-2-one,4-hydroxy-5-methoxy-3-(4-methoxyphenyl)-8,8-dimethyl- (9CI)

Base Information

Chemical Name:2H,8H-Benzo[1,2-b:3,4-b']dipyran-2-one,4-hydroxy-5-methoxy-3-(4-methoxyphenyl)-8,8-dimethyl- (9CI)
CAS No.:28419-76-3
Molecular Formula:C22H20 O6
Molecular Weight:380.397
Hs Code.:

Synonyms:2H,8H-Benzo[1,2-b:3,4-b']dipyran-2-one,4-hydroxy-5-methoxy-3-(p-methoxyphenyl)-8,8-dimethyl- (8CI); a-Isorobustic acid

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Business phase:: The product has achieved commercial mass production^*data from LookChem market partment

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Chemical Property of 2H,8H-Benzo[1,2-b:3,4-b']dipyran-2-one,4-hydroxy-5-methoxy-3-(4-methoxyphenyl)-8,8-dimethyl- (9CI)

Chemical Property:

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MSDS Files:: SDS file from LookChem

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Technology Process of 2H,8H-Benzo[1,2-b:3,4-b']dipyran-2-one,4-hydroxy-5-methoxy-3-(4-methoxyphenyl)-8,8-dimethyl- (9CI)

There total 9 articles about 2H,8H-Benzo[1,2-b:3,4-b']dipyran-2-one,4-hydroxy-5-methoxy-3-(4-methoxyphenyl)-8,8-dimethyl- (9CI) 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: 78.0%

: 18649-43-9
4-methoxyphenyllead(IV) triacetate

: 132329-60-3
4-hydroxy-5-methoxy-8,8-dimethyl-2H,8H-benzo<1,2-b:3,4-b'>dipyran-2-one

: 28419-76-3
4-hydroxy-5-methoxy-3-(4-methoxyphenyl)-8,8-dimethyl-2H,8H-1-benzo-<1,2-b:3,4-b'>-dipyran-2-one

Guidance literature:: With pyridine; In chloroform; at 60 ℃; for 12h;
DOI:10.1016/S0040-4039(00)88512-3

Reference yield:

: 25983-76-0
isoevodionol

: 28419-76-3
4-hydroxy-5-methoxy-3-(4-methoxyphenyl)-8,8-dimethyl-2H,8H-1-benzo-<1,2-b:3,4-b'>-dipyran-2-one

Guidance literature:: Multi-step reaction with 2 steps

1: 81 percent / sodium hydride / 0.33 h / Heating

2: 78 percent / 12 h

With sodium hydride;

Reference yield:

: 2174-64-3
5-methoxyresorcinol

: 28419-76-3
4-hydroxy-5-methoxy-3-(4-methoxyphenyl)-8,8-dimethyl-2H,8H-1-benzo-<1,2-b:3,4-b'>-dipyran-2-one

Guidance literature:: Multi-step reaction with 4 steps

1: 73 percent / HCl(g), zinc chloride / diethyl ether / 16 h / 0 °C

2: 68 percent / pyridine / 10 h / 170 °C

3: 81 percent / NaH / 0.33 h / Heating

4: 78 percent / pyridine / CHCl₃ / 12 h / 60 °C

With pyridine; hydrogenchloride; sodium hydride; zinc(II) chloride; In diethyl ether; chloroform;
DOI:10.1016/S0040-4039(00)88512-3