(2S,4R)-2-(3-Benzyloxy-propyl)-4-(4-methoxy-benzyloxy)-5-methyl-3,4-dihydro-2H-pyran

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Chemical Name:(2S,4R)-2-(3-Benzyloxy-propyl)-4-(4-methoxy-benzyloxy)-5-methyl-3,4-dihydro-2H-pyran
CAS No.:365212-78-8
Molecular Formula:C₂₄H₃₀O₄
Molecular Weight:382.5
Hs Code.:

Synonyms:(2S,4R)-2-(3-Benzyloxy-propyl)-4-(4-methoxy-benzyloxy)-5-methyl-3,4-dihydro-2H-pyran

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Chemical Property of (2S,4R)-2-(3-Benzyloxy-propyl)-4-(4-methoxy-benzyloxy)-5-methyl-3,4-dihydro-2H-pyran

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Technology Process of (2S,4R)-2-(3-Benzyloxy-propyl)-4-(4-methoxy-benzyloxy)-5-methyl-3,4-dihydro-2H-pyran

There total 5 articles about (2S,4R)-2-(3-Benzyloxy-propyl)-4-(4-methoxy-benzyloxy)-5-methyl-3,4-dihydro-2H-pyran 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: 97.0%

: 824-94-2
p-methoxybenzyl chloride

: 884004-54-0
(2S,4R)-2-(3-Benzyloxy-propyl)-5-methyl-3,4-dihydro-2H-pyran-4-ol

: 365212-78-8
(2S,4R)-2-(3-Benzyloxy-propyl)-4-(4-methoxy-benzyloxy)-5-methyl-3,4-dihydro-2H-pyran

Guidance literature:: (2S,4R)-2-(3-Benzyloxy-propyl)-5-methyl-3,4-dihydro-2H-pyran-4-ol; With sodium hydride; In N,N-dimethyl-formamide; at 0 ℃; for 0.5h;

p-methoxybenzyl chloride; In N,N-dimethyl-formamide; at 20 ℃; for 4h; Further stages.;
DOI:10.1021/ol016434w

Reference yield:

: 5470-84-8
4-benzyloxybutanal

: 365212-78-8
(2S,4R)-2-(3-Benzyloxy-propyl)-4-(4-methoxy-benzyloxy)-5-methyl-3,4-dihydro-2H-pyran

Guidance literature:: Multi-step reaction with 3 steps

1.1: 4 Angstroem molecular sieves / Jacobsen's tridentate Cr (III) catalyst / acetone / 52 h / 20 °C

1.2: TFA / CH₂Cl₂; acetone / 1 h / 0 °C

2.1: CeCl₃*7H₂O / ethanol / 0.33 h / 20 °C

2.2: NaBH₄ / ethanol / 2 h / -60 - 20 °C

3.1: NaH / dimethylformamide / 0.5 h / 0 °C

3.2: 97 percent / dimethylformamide / 4 h / 20 °C

With cerium(III) chloride; 4 A molecular sieve; sodium hydride; (1R,2R)-(-)-[1,2-cyclohexanediamine-N,N’-bis(3,5-di-tertbutylsalicylidine)]chromium(III) chloride; In ethanol; N,N-dimethyl-formamide; acetone;
DOI:10.1021/ol016434w

Reference yield:

: 72476-03-0
(E)-3-methyl-4-methoxy-2-[(trimethylsilyl)oxy]-1,3-butadiene

: 365212-78-8
(2S,4R)-2-(3-Benzyloxy-propyl)-4-(4-methoxy-benzyloxy)-5-methyl-3,4-dihydro-2H-pyran

Guidance literature:: Multi-step reaction with 3 steps

1.1: 4 Angstroem molecular sieves / Jacobsen's tridentate Cr (III) catalyst / acetone / 52 h / 20 °C

1.2: TFA / CH₂Cl₂; acetone / 1 h / 0 °C

2.1: CeCl₃*7H₂O / ethanol / 0.33 h / 20 °C

2.2: NaBH₄ / ethanol / 2 h / -60 - 20 °C

3.1: NaH / dimethylformamide / 0.5 h / 0 °C

3.2: 97 percent / dimethylformamide / 4 h / 20 °C

With cerium(III) chloride; 4 A molecular sieve; sodium hydride; (1R,2R)-(-)-[1,2-cyclohexanediamine-N,N’-bis(3,5-di-tertbutylsalicylidine)]chromium(III) chloride; In ethanol; N,N-dimethyl-formamide; acetone;
DOI:10.1021/ol016434w