(S)-5-[2-[3,4-dihydro-2,5,7,8-tetramethyl-6-phenylmethoxy-2H-1-benzopyran-2-yl]-1-hydroxyethylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione

Base Information

Chemical Name:(S)-5-[2-[3,4-dihydro-2,5,7,8-tetramethyl-6-phenylmethoxy-2H-1-benzopyran-2-yl]-1-hydroxyethylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione
CAS No.:119817-85-5
Molecular Formula:C₂₈H₃₂O₇
Molecular Weight:480.558
Hs Code.:

Synonyms:(S)-5-[2-[3,4-dihydro-2,5,7,8-tetramethyl-6-phenylmethoxy-2H-1-benzopyran-2-yl]-1-hydroxyethylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione

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Chemical Property of (S)-5-[2-[3,4-dihydro-2,5,7,8-tetramethyl-6-phenylmethoxy-2H-1-benzopyran-2-yl]-1-hydroxyethylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione

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Technology Process of (S)-5-[2-[3,4-dihydro-2,5,7,8-tetramethyl-6-phenylmethoxy-2H-1-benzopyran-2-yl]-1-hydroxyethylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione

There total 4 articles about (S)-5-[2-[3,4-dihydro-2,5,7,8-tetramethyl-6-phenylmethoxy-2H-1-benzopyran-2-yl]-1-hydroxyethylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione 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:

: 58846-72-3
(2S)-(6-benzyloxy-2,5,7,8-tetramethylchroman-2-yl)acetic acid methyl ester

: 119817-85-5
(S)-5-[2-[3,4-dihydro-2,5,7,8-tetramethyl-6-phenylmethoxy-2H-1-benzopyran-2-yl]-1-hydroxyethylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione

Guidance literature:: Multi-step reaction with 2 steps

1: aq. 2N NaOH / methanol / 120 h

2: pyridine / CH₂Cl₂

With pyridine; sodium hydroxide; In methanol; dichloromethane;

Reference yield:

: 58846-71-2
(-)-(S)-methyl(6-hydroxy-2,5,7,8-tetramethylchroman-2-yl)acetate

: 119817-85-5
(S)-5-[2-[3,4-dihydro-2,5,7,8-tetramethyl-6-phenylmethoxy-2H-1-benzopyran-2-yl]-1-hydroxyethylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione

Guidance literature:: Multi-step reaction with 3 steps

1: 90.4 percent / K₂CO₃ / dimethylformamide / 120 h / Ambient temperature

2: aq. 2N NaOH / methanol / 120 h

3: pyridine / CH₂Cl₂

With pyridine; sodium hydroxide; potassium carbonate; In methanol; dichloromethane; N,N-dimethyl-formamide;

Reference yield:

: 53730-39-5
(S)-(-)-3,4-Dihydro-6-hydroxy-2,5,7,8-tetramethyl-2H-1-benzopyran-2-acetic acid

: 119817-85-5
(S)-5-[2-[3,4-dihydro-2,5,7,8-tetramethyl-6-phenylmethoxy-2H-1-benzopyran-2-yl]-1-hydroxyethylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione

Guidance literature:: Multi-step reaction with 4 steps

1: 214.2 g / TsOH*H₂O / 18 h / Heating

2: 90.4 percent / K₂CO₃ / dimethylformamide / 120 h / Ambient temperature

3: aq. 2N NaOH / methanol / 120 h

4: pyridine / CH₂Cl₂

With pyridine; sodium hydroxide; potassium carbonate; toluene-4-sulfonic acid; In methanol; dichloromethane; N,N-dimethyl-formamide;