3,4-dihydro-2,5,7,8-tetramethyl-2-(5-phenyl-3-isoxazolyl)-2H-1-benzopyran-6-ol

Base Information

Chemical Name:3,4-dihydro-2,5,7,8-tetramethyl-2-(5-phenyl-3-isoxazolyl)-2H-1-benzopyran-6-ol
CAS No.:1333118-49-2
Molecular Formula:C₂₂H₂₃NO₃
Molecular Weight:349.43
Hs Code.:

Synonyms:3,4-dihydro-2,5,7,8-tetramethyl-2-(5-phenyl-3-isoxazolyl)-2H-1-benzopyran-6-ol

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Chemical Property of 3,4-dihydro-2,5,7,8-tetramethyl-2-(5-phenyl-3-isoxazolyl)-2H-1-benzopyran-6-ol

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Technology Process of 3,4-dihydro-2,5,7,8-tetramethyl-2-(5-phenyl-3-isoxazolyl)-2H-1-benzopyran-6-ol

There total 5 articles about 3,4-dihydro-2,5,7,8-tetramethyl-2-(5-phenyl-3-isoxazolyl)-2H-1-benzopyran-6-ol 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: 58.0%

: 1333118-46-9
3-(3,4-dihydro-6-methoxy-2,5,7,8-tetramethyl-2H-1-benzopyran-2-yl)-5-phenyl-isoxazole

: 1333118-49-2
3,4-dihydro-2,5,7,8-tetramethyl-2-(5-phenyl-3-isoxazolyl)-2H-1-benzopyran-6-ol

Guidance literature:: 3-(3,4-dihydro-6-methoxy-2,5,7,8-tetramethyl-2H-1-benzopyran-2-yl)-5-phenyl-isoxazole; With boron dimethyl-trifluoro sulphide; In dichloromethane; at 0 - 20 ℃; for 2h;

With water; In dichloromethane;
DOI:10.1016/j.bmc.2011.06.074

Reference yield:

: 184879-62-7
3,4-dihydro-6-methoxy-2,5 ,7,8-tetramethyl-2H-benzopyran-2-methanol

: 1333118-49-2
3,4-dihydro-2,5,7,8-tetramethyl-2-(5-phenyl-3-isoxazolyl)-2H-1-benzopyran-6-ol

Guidance literature:: Multi-step reaction with 4 steps

1: pyridinium chlorochromate / dichloromethane

2: pyridine; hydroxylamine hydrochloride

3: copper(ll) sulfate pentahydrate; chloroamine-T; copper / water; tert-butyl alcohol

4: boron dimethyl-trifluoro sulphide / dichloromethane / 2 h / 0 - 20 °C

With pyridine; copper(ll) sulfate pentahydrate; boron dimethyl-trifluoro sulphide; hydroxylamine hydrochloride; chloroamine-T; copper; pyridinium chlorochromate; In dichloromethane; water; tert-butyl alcohol;
DOI:10.1016/j.bmc.2011.06.074

Reference yield:

: 1333118-45-8
6-methoxy-2,5,7,8-tetramethyl-2H-1-benzopyran-2-carbaldehyde oxime

: 1333118-49-2
3,4-dihydro-2,5,7,8-tetramethyl-2-(5-phenyl-3-isoxazolyl)-2H-1-benzopyran-6-ol

Guidance literature:: Multi-step reaction with 2 steps

1: copper(ll) sulfate pentahydrate; chloroamine-T; copper / water; tert-butyl alcohol

2: boron dimethyl-trifluoro sulphide / dichloromethane / 2 h / 0 - 20 °C

With copper(ll) sulfate pentahydrate; boron dimethyl-trifluoro sulphide; chloroamine-T; copper; In dichloromethane; water; tert-butyl alcohol;
DOI:10.1016/j.bmc.2011.06.074