(S)-2,4-Bis-benzyloxy-butyric acid (1R,2R)-1-ethyl-2-hydroxy-pent-4-enyl ester

Base Information

Chemical Name:(S)-2,4-Bis-benzyloxy-butyric acid (1R,2R)-1-ethyl-2-hydroxy-pent-4-enyl ester
CAS No.:760181-80-4
Molecular Formula:C₂₅H₃₂O₅
Molecular Weight:412.526
Hs Code.:

Synonyms:(S)-2,4-Bis-benzyloxy-butyric acid (1R,2R)-1-ethyl-2-hydroxy-pent-4-enyl ester

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Chemical Property of (S)-2,4-Bis-benzyloxy-butyric acid (1R,2R)-1-ethyl-2-hydroxy-pent-4-enyl ester

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Technology Process of (S)-2,4-Bis-benzyloxy-butyric acid (1R,2R)-1-ethyl-2-hydroxy-pent-4-enyl ester

There total 5 articles about (S)-2,4-Bis-benzyloxy-butyric acid (1R,2R)-1-ethyl-2-hydroxy-pent-4-enyl ester 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: 91.0%

: 760181-74-6
(S)-2,4-Bis-benzyloxy-butyric acid (1R,2R)-1-ethyl-2-(4-methoxy-benzyloxy)-pent-4-enyl ester

: 760181-80-4
(S)-2,4-Bis-benzyloxy-butyric acid (1R,2R)-1-ethyl-2-hydroxy-pent-4-enyl ester

Guidance literature:: With sodium hydrogencarbonate; 2,3-dicyano-5,6-dichloro-p-benzoquinone; In dichloromethane; at 0 ℃; for 5h;
DOI:10.1016/j.tet.2004.05.045

Reference yield:

: 109199-96-4
(2S)-2,4-dibenzyloxybutanal

: 760181-80-4
(S)-2,4-Bis-benzyloxy-butyric acid (1R,2R)-1-ethyl-2-hydroxy-pent-4-enyl ester

Guidance literature:: Multi-step reaction with 3 steps

1.1: KOH; AgNO₃ / methanol; H₂O / 0.33 h / 0 °C

2.1: 2,4,6-trichlorobenzoyl chloride; Et₃N / tetrahydrofuran / 20 °C

2.2: 77 percent / DMAP / tetrahydrofuran; toluene / 3 h / 20 °C

3.1: 91 percent / NaHCO₃; DDQ / CH₂Cl₂ / 5 h / 0 °C

With potassium hydroxide; 2,4,6-trichlorobenzoyl chloride; sodium hydrogencarbonate; silver nitrate; triethylamine; 2,3-dicyano-5,6-dichloro-p-benzoquinone; In tetrahydrofuran; methanol; dichloromethane; water;
DOI:10.1016/j.tet.2004.05.045

Reference yield:

: 760181-72-4
(R)-2-(4-methoxybenzyloxy)pent-4-en-1-ol

: 760181-80-4
(S)-2,4-Bis-benzyloxy-butyric acid (1R,2R)-1-ethyl-2-hydroxy-pent-4-enyl ester

Guidance literature:: Multi-step reaction with 4 steps

1.1: DMSO; (COCl)2; Et₃N / CH₂Cl₂ / -78 - 20 °C

2.1: 1.3 g / ZnBr₂ / diethyl ether / 2 h / 0 °C

3.1: 2,4,6-trichlorobenzoyl chloride; Et₃N / tetrahydrofuran / 20 °C

3.2: 77 percent / DMAP / tetrahydrofuran; toluene / 3 h / 20 °C

4.1: 91 percent / NaHCO₃; DDQ / CH₂Cl₂ / 5 h / 0 °C

With oxalyl dichloride; 2,4,6-trichlorobenzoyl chloride; sodium hydrogencarbonate; dimethyl sulfoxide; triethylamine; 2,3-dicyano-5,6-dichloro-p-benzoquinone; zinc dibromide; In tetrahydrofuran; diethyl ether; dichloromethane; 1.1: Swern oxidation / 2.1: Grignard reaction;
DOI:10.1016/j.tet.2004.05.045