(5,6-dimethoxy-2,2-dimethyl-2H-benzopyran-7-yl)(2-hydroxy-5-methoxyphenyl)methanone

Base Information

Chemical Name:(5,6-dimethoxy-2,2-dimethyl-2H-benzopyran-7-yl)(2-hydroxy-5-methoxyphenyl)methanone
CAS No.:1435268-74-8
Molecular Formula:C₂₁H₂₂O₆
Molecular Weight:370.402
Hs Code.:

Synonyms:(5,6-dimethoxy-2,2-dimethyl-2H-benzopyran-7-yl)(2-hydroxy-5-methoxyphenyl)methanone

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Chemical Property of (5,6-dimethoxy-2,2-dimethyl-2H-benzopyran-7-yl)(2-hydroxy-5-methoxyphenyl)methanone

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Technology Process of (5,6-dimethoxy-2,2-dimethyl-2H-benzopyran-7-yl)(2-hydroxy-5-methoxyphenyl)methanone

There total 7 articles about (5,6-dimethoxy-2,2-dimethyl-2H-benzopyran-7-yl)(2-hydroxy-5-methoxyphenyl)methanone 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:

: 67015-34-3
5,6-dimethoxy-2,2-dimethyl-2H-benzopyran

: 73220-20-9
5-methoxy-2-(methoxymethoxy)benzaldehyde

: 1435268-74-8
(5,6-dimethoxy-2,2-dimethyl-2H-benzopyran-7-yl)(2-hydroxy-5-methoxyphenyl)methanone

: 1435268-92-0
(5,6-dimethoxy-2,2-dimethyl-2H-benzopyran-8-yl)(2-hydroxy-5-methoxyphenyl)methanone

Guidance literature:: 5,6-dimethoxy-2,2-dimethyl-2H-benzopyran; With n-butyllithium; N,N,N,N,-tetramethylethylenediamine; In tetrahydrofuran; at 0 ℃; for 0.5h; Inert atmosphere;

5-methoxy-2-(methoxymethoxy)benzaldehyde; In tetrahydrofuran; at 0 - 20 ℃; for 7.5h; Further stages;
DOI:10.1016/j.bmc.2013.03.079

Reference yield:

: 95-01-2
2,4-Dihydroxybenzaldehyde

: 1435268-74-8
(5,6-dimethoxy-2,2-dimethyl-2H-benzopyran-7-yl)(2-hydroxy-5-methoxyphenyl)methanone

: 1435268-92-0
(5,6-dimethoxy-2,2-dimethyl-2H-benzopyran-8-yl)(2-hydroxy-5-methoxyphenyl)methanone

Guidance literature:: Multi-step reaction with 5 steps

1.1: calcium hydroxide / methanol / 48 h / 20 °C

2.1: potassium carbonate / acetone / 20 h / 20 °C / Inert atmosphere

3.1: dihydrogen peroxide; potassium hydrogensulfate / methanol; water / 8 h / 20 °C

4.1: potassium carbonate / acetone / 20 h / Inert atmosphere; Reflux

5.1: N,N,N,N,-tetramethylethylenediamine; n-butyllithium / tetrahydrofuran / 0.5 h / 0 °C / Inert atmosphere

5.2: 7.5 h / 0 - 20 °C

With potassium hydrogensulfate; n-butyllithium; N,N,N,N,-tetramethylethylenediamine; dihydrogen peroxide; potassium carbonate; calcium hydroxide; In tetrahydrofuran; methanol; water; acetone;
DOI:10.1016/j.bmc.2013.03.079

Reference yield:

: 79571-17-8
5-(methoxy)-2,2-dimethyl-2H-chromene-6-carbaldehyde

: 1435268-74-8
(5,6-dimethoxy-2,2-dimethyl-2H-benzopyran-7-yl)(2-hydroxy-5-methoxyphenyl)methanone

: 1435268-92-0
(5,6-dimethoxy-2,2-dimethyl-2H-benzopyran-8-yl)(2-hydroxy-5-methoxyphenyl)methanone

Guidance literature:: Multi-step reaction with 3 steps

1.1: dihydrogen peroxide; potassium hydrogensulfate / methanol; water / 8 h / 20 °C

2.1: potassium carbonate / acetone / 20 h / Inert atmosphere; Reflux

3.1: N,N,N,N,-tetramethylethylenediamine; n-butyllithium / tetrahydrofuran / 0.5 h / 0 °C / Inert atmosphere

3.2: 7.5 h / 0 - 20 °C

With potassium hydrogensulfate; n-butyllithium; N,N,N,N,-tetramethylethylenediamine; dihydrogen peroxide; potassium carbonate; In tetrahydrofuran; methanol; water; acetone;
DOI:10.1016/j.bmc.2013.03.079