Benzoic acid (E)-(S)-5-(4-methoxy-benzyloxy)-6-oxo-hex-2-enyl ester

Base Information

• Chemical Name: Benzoic acid (E)-(S)-5-(4-methoxy-benzyloxy)-6-oxo-hex-2-enyl ester
• CAS No.: 334706-30-8
• Molecular Formula: C₂₁H₂₂O₅
• Molecular Weight: 354.403
• Mol file: 334706-30-8.mol

Synonyms:Benzoic acid (E)-(S)-5-(4-methoxy-benzyloxy)-6-oxo-hex-2-enyl ester

Chemical Property of Benzoic acid (E)-(S)-5-(4-methoxy-benzyloxy)-6-oxo-hex-2-enyl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of Benzoic acid (E)-(S)-5-(4-methoxy-benzyloxy)-6-oxo-hex-2-enyl ester

There total 8 articles about Benzoic acid (E)-(S)-5-(4-methoxy-benzyloxy)-6-oxo-hex-2-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: 88.0%

Benzoic acid (E)-(S)-6-hydroxy-5-(4-methoxy-benzyloxy)-hex-2-enyl ester (334706-40-0) → Benzoic acid (E)-(S)-5-(4-methoxy-benzyloxy)-6-oxo-hex-2-enyl ester (334706-30-8)

Guidance literature:

Benzoic acid (E)-(S)-6-hydroxy-5-(4-methoxy-benzyloxy)-hex-2-enyl ester; With oxalyl dichloride; dimethyl sulfoxide; at -78 ℃;

With triethylamine; at -78 - 20 ℃;

DOI:10.1016/S0040-4039(00)02115-8

Reference yield:

O-(4-methoxybenzyl)-trichloroacetimidate (89238-99-3) → Benzoic acid (E)-(S)-5-(4-methoxy-benzyloxy)-6-oxo-hex-2-enyl ester (334706-30-8)

Guidance literature:

Multi-step reaction with 8 steps

1.1: 76 percent / BF₃*OEt₂ / CH₂Cl₂ / 1 h / -78 °C

2.1: 99 percent / DIBAL / toluene / 0.08 h / -78 °C

3.1: 90 percent / benzene / 1 h / Heating

4.1: 99 percent / Et₃N; DMAP / CH₂Cl₂ / 2 h

5.1: 97 percent / DIBAL / toluene / 2 h / -78 °C

6.1: 82 percent / pyridine; DMAP / CH₂Cl₂ / 16 h / 20 °C

7.1: 63 percent / TBAF / tetrahydrofuran / 2 h / 20 °C

8.1: (COCl)2; DMSO / -78 °C

8.2: 88 percent / Et₃N / -78 - 20 °C

With pyridine; dmap; oxalyl dichloride; boron trifluoride diethyl etherate; tetrabutyl ammonium fluoride; diisobutylaluminium hydride; dimethyl sulfoxide; triethylamine; In tetrahydrofuran; dichloromethane; toluene; benzene;

DOI:10.1016/S0040-4039(00)02115-8

Reference yield:

(S)-4-(4-Methoxy-benzyloxy)-tetrahydro-furan-2-ol (194540-66-4) → Benzoic acid (E)-(S)-5-(4-methoxy-benzyloxy)-6-oxo-hex-2-enyl ester (334706-30-8)

Guidance literature:

Multi-step reaction with 6 steps

1.1: 90 percent / benzene / 1 h / Heating

2.1: 99 percent / Et₃N; DMAP / CH₂Cl₂ / 2 h

3.1: 97 percent / DIBAL / toluene / 2 h / -78 °C

4.1: 82 percent / pyridine; DMAP / CH₂Cl₂ / 16 h / 20 °C

5.1: 63 percent / TBAF / tetrahydrofuran / 2 h / 20 °C

6.1: (COCl)2; DMSO / -78 °C

6.2: 88 percent / Et₃N / -78 - 20 °C

With pyridine; dmap; oxalyl dichloride; tetrabutyl ammonium fluoride; diisobutylaluminium hydride; dimethyl sulfoxide; triethylamine; In tetrahydrofuran; dichloromethane; toluene; benzene;

DOI:10.1016/S0040-4039(00)02115-8

upstream raw materials:

Benzoic acid (E)-(S)-6-hydroxy-5-(4-methoxy-benzyloxy)-hex-2-enyl ester

O-(4-methoxybenzyl)-trichloroacetimidate

(S)-4-(4-Methoxy-benzyloxy)-tetrahydro-furan-2-ol

(S)-4-(4-Methoxy-benzyloxy)-dihydro-furan-2-one