(4R)-(-)-3-{[(2R,3R)-5-Bromo-2-(3,4-dimethoxyphenyl)-2,3-dihydrobenzofuran-3-yl]carbonyl}-4-isopropyloxazolidin-2-one

Base Information

Chemical Name:(4R)-(-)-3-{[(2R,3R)-5-Bromo-2-(3,4-dimethoxyphenyl)-2,3-dihydrobenzofuran-3-yl]carbonyl}-4-isopropyloxazolidin-2-one
CAS No.:254975-88-7
Molecular Formula:C₂₃H₂₄BrNO₆
Molecular Weight:490.351
Hs Code.:

Synonyms:(4R)-(-)-3-{[(2R,3R)-5-Bromo-2-(3,4-dimethoxyphenyl)-2,3-dihydrobenzofuran-3-yl]carbonyl}-4-isopropyloxazolidin-2-one

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Chemical Property of (4R)-(-)-3-{[(2R,3R)-5-Bromo-2-(3,4-dimethoxyphenyl)-2,3-dihydrobenzofuran-3-yl]carbonyl}-4-isopropyloxazolidin-2-one

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Technology Process of (4R)-(-)-3-{[(2R,3R)-5-Bromo-2-(3,4-dimethoxyphenyl)-2,3-dihydrobenzofuran-3-yl]carbonyl}-4-isopropyloxazolidin-2-one

There total 5 articles about (4R)-(-)-3-{[(2R,3R)-5-Bromo-2-(3,4-dimethoxyphenyl)-2,3-dihydrobenzofuran-3-yl]carbonyl}-4-isopropyloxazolidin-2-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: 71.0%

: 254975-87-6
(4R)-(+)-3-{(2R,3R)-2-[2-(Benzyloxy)-5-bromophenyl]-3-(3,4-dimethoxyphenyl)-3-hydroxypropanoyl}-4-isopropyloxazolidin-2-one

: 254975-88-7
(4R)-(-)-3-{[(2R,3R)-5-Bromo-2-(3,4-dimethoxyphenyl)-2,3-dihydrobenzofuran-3-yl]carbonyl}-4-isopropyloxazolidin-2-one

Guidance literature:: With trimethylsilyl iodide; In dichloromethane; at 20 ℃; for 1.28333h;
DOI:10.1039/a909816j

Reference yield:

: 120-14-9
3,4-dimethoxy-benzaldehyde

: 254975-88-7
(4R)-(-)-3-{[(2R,3R)-5-Bromo-2-(3,4-dimethoxyphenyl)-2,3-dihydrobenzofuran-3-yl]carbonyl}-4-isopropyloxazolidin-2-one

Guidance literature:: Multi-step reaction with 2 steps

1.1: 9-BBN triflate; iPr₂NEt / CH₂Cl₂ / 1 h / 1 °C

1.2: 87 percent / CH₂Cl₂ / 3 h / -75 - 20 °C

2.1: 71 percent / Me₃SiI / CH₂Cl₂ / 1.28 h / 20 °C

With trimethylsilyl iodide; N-ethyl-N,N-diisopropylamine; B-(trifluoromethanesulfonyloxy)-9-borabicyclo[3.3.1]nonane; In dichloromethane; 1.1: enolization / 1.2: Addition / 2.1: Cyclization;
DOI:10.1039/a909816j

Reference yield:

: 149428-97-7
2-(Benzyloxy)-5-bromophenylacetic acid

: 254975-88-7
(4R)-(-)-3-{[(2R,3R)-5-Bromo-2-(3,4-dimethoxyphenyl)-2,3-dihydrobenzofuran-3-yl]carbonyl}-4-isopropyloxazolidin-2-one

Guidance literature:: Multi-step reaction with 4 steps

1.1: Et₃N / diethyl ether / 1 h / 0 °C

2.1: BuLi / tetrahydrofuran; hexane; diethyl ether / 0.75 h / -78 - 0 °C

3.1: 9-BBN triflate; iPr₂NEt / CH₂Cl₂ / 1 h / 1 °C

3.2: 87 percent / CH₂Cl₂ / 3 h / -75 - 20 °C

4.1: 71 percent / Me₃SiI / CH₂Cl₂ / 1.28 h / 20 °C

With n-butyllithium; trimethylsilyl iodide; triethylamine; N-ethyl-N,N-diisopropylamine; B-(trifluoromethanesulfonyloxy)-9-borabicyclo[3.3.1]nonane; In tetrahydrofuran; diethyl ether; hexane; dichloromethane; 1.1: Acylation / 2.1: Acylation / 3.1: enolization / 3.2: Addition / 4.1: Cyclization;
DOI:10.1039/a909816j