3(4'-hydroxy)phenyl-8,8-dimethyl-6,7-dihydro-4H,8H-benzo(1,2-b:5,4-b')dipyran-4-one

Base Information

Chemical Name:3(4'-hydroxy)phenyl-8,8-dimethyl-6,7-dihydro-4H,8H-benzo(1,2-b:5,4-b')dipyran-4-one
CAS No.:97185-30-3
Molecular Formula:C₂₀H₁₈O₄
Molecular Weight:322.361
Hs Code.:

Synonyms:3(4'-hydroxy)phenyl-8,8-dimethyl-6,7-dihydro-4H,8H-benzo(1,2-b:5,4-b')dipyran-4-one

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Chemical Property of 3(4'-hydroxy)phenyl-8,8-dimethyl-6,7-dihydro-4H,8H-benzo(1,2-b:5,4-b')dipyran-4-one

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Technology Process of 3(4'-hydroxy)phenyl-8,8-dimethyl-6,7-dihydro-4H,8H-benzo(1,2-b:5,4-b')dipyran-4-one

There total 9 articles about 3(4'-hydroxy)phenyl-8,8-dimethyl-6,7-dihydro-4H,8H-benzo(1,2-b:5,4-b')dipyran-4-one 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:

: 97185-29-0
3-(4'-Methoxy)phenyl-8,8-dimethyl-6,7-dihydro-4H,8H-benzo<1,2-b; 5,4.b'>dipyran-4-one

: 97185-30-3
3(4'-hydroxy)phenyl-8,8-dimethyl-6,7-dihydro-4H,8H-benzo(1,2-b:5,4-b')dipyran-4-one

Guidance literature:: With hydrogen bromide; In acetic anhydride; for 6h;
DOI:10.1016/S0040-4020(01)96643-8

Reference yield:

: 98192-31-5
2'-hydroxy-4-methoxymethoxy-3'',4''-dihydro-2'',2''-dimethyl-2H-pyrano(4',5':6'',5'')chalcone

: 97185-30-3
3(4'-hydroxy)phenyl-8,8-dimethyl-6,7-dihydro-4H,8H-benzo(1,2-b:5,4-b')dipyran-4-one

Guidance literature:: With hydrogenchloride; thallium(III) nitrate; Yield given. Multistep reaction; 1.) MeOH, r.t., 2.) r.t., 48 h;

Reference yield:

: 31273-58-2
1-(7-hydroxy-2,2-dimethylchroman-6-yl)ethanone

: 97185-30-3
3(4'-hydroxy)phenyl-8,8-dimethyl-6,7-dihydro-4H,8H-benzo(1,2-b:5,4-b')dipyran-4-one

Guidance literature:: Multi-step reaction with 6 steps

1: 85 percent / 30percent KOH / ethanol / 48 h / Ambient temperature

2: 70 percent / K₂CO₃, KI / acetone / 14 h / Heating

3: 90 percent / 30percent H₂O₂, 8percent NaOH / acetone; methanol / 0.75 h / Heating

4: 1) BF₃*OEt₂ / 1) benzene, 5 deg C, 2) RT

5: 55 percent / glacial acetic acid, HCl / 3 h / Heating

6: 15 mg / HBr / acetic anhydride / 7 h / Heating

With hydrogenchloride; potassium hydroxide; sodium hydroxide; boron trifluoride diethyl etherate; hydrogen bromide; dihydrogen peroxide; potassium carbonate; acetic acid; potassium iodide; In methanol; ethanol; acetic anhydride; acetone;