(3S,7aR)-6-(2,5-Dimethoxy-4-methyl-phenyl)-3-isopropyl-7a-methyl-tetrahydro-pyrrolo[2,1-b]oxazol-5-one

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Chemical Name:(3S,7aR)-6-(2,5-Dimethoxy-4-methyl-phenyl)-3-isopropyl-7a-methyl-tetrahydro-pyrrolo[2,1-b]oxazol-5-one
CAS No.:733001-82-6
Molecular Formula:C₁₉H₂₇NO₄
Molecular Weight:333.428
Hs Code.:

Synonyms:(3S,7aR)-6-(2,5-Dimethoxy-4-methyl-phenyl)-3-isopropyl-7a-methyl-tetrahydro-pyrrolo[2,1-b]oxazol-5-one

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Chemical Property of (3S,7aR)-6-(2,5-Dimethoxy-4-methyl-phenyl)-3-isopropyl-7a-methyl-tetrahydro-pyrrolo[2,1-b]oxazol-5-one

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Technology Process of (3S,7aR)-6-(2,5-Dimethoxy-4-methyl-phenyl)-3-isopropyl-7a-methyl-tetrahydro-pyrrolo[2,1-b]oxazol-5-one

There total 4 articles about (3S,7aR)-6-(2,5-Dimethoxy-4-methyl-phenyl)-3-isopropyl-7a-methyl-tetrahydro-pyrrolo[2,1-b]oxazol-5-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: 85.0%

: 2026-48-4,473-75-6
(S)-valinol

: 733001-89-3
2-(2,5-dimethoxy-4-methylphenyl)-4-oxopentanoic acid

: 733001-82-6
(3S,7aR)-6-(2,5-Dimethoxy-4-methyl-phenyl)-3-isopropyl-7a-methyl-tetrahydro-pyrrolo[2,1-b]oxazol-5-one

Guidance literature:: In toluene; for 15h; Heating;
DOI:10.1016/j.tetlet.2004.04.191

Reference yield:

: 51267-06-2
(2,5-Dimethoxy-4-methyl-phenyl)-acetic acid methyl ester

: 733001-82-6
(3S,7aR)-6-(2,5-Dimethoxy-4-methyl-phenyl)-3-isopropyl-7a-methyl-tetrahydro-pyrrolo[2,1-b]oxazol-5-one

Guidance literature:: Multi-step reaction with 4 steps

1: 98 percent / LDA; NaI / tetrahydrofuran; hexamethylphosphoric acid triamide / 3.5 h / -78 °C

2: 98 percent / OsO₄; NMO; NaIO₄ / tetrahydrofuran; H₂O / 18 h / 20 °C

3: 98 percent / aq. KOH / tetrahydrofuran / 12 h / 50 °C

4: 85 percent / toluene / 15 h / Heating

With potassium hydroxide; sodium periodate; osmium(VIII) oxide; N-methyl-2-indolinone; sodium iodide; lithium diisopropyl amide; In tetrahydrofuran; N,N,N,N,N,N-hexamethylphosphoric triamide; water; toluene; 2: Lemieux-Johnson oxidation;
DOI:10.1016/j.tetlet.2004.04.191

Reference yield:

: 733001-88-2
methyl 2-(2,5-dimethoxy-4-methylphenyl)-4-oxopentanoate

: 733001-82-6
(3S,7aR)-6-(2,5-Dimethoxy-4-methyl-phenyl)-3-isopropyl-7a-methyl-tetrahydro-pyrrolo[2,1-b]oxazol-5-one

Guidance literature:: Multi-step reaction with 2 steps

1: 98 percent / aq. KOH / tetrahydrofuran / 12 h / 50 °C

2: 85 percent / toluene / 15 h / Heating

With potassium hydroxide; In tetrahydrofuran; toluene;
DOI:10.1016/j.tetlet.2004.04.191