Toluene-4-sulfonic acid (2S,3R,4R)-3-hydroxy-2,4-dimethyl-hex-5-enyl ester

Base Information

• Chemical Name: Toluene-4-sulfonic acid (2S,3R,4R)-3-hydroxy-2,4-dimethyl-hex-5-enyl ester
• CAS No.: 186425-25-2
• Molecular Formula: C₁₅H₂₂O₄S
• Molecular Weight: 298.403
• Mol file: 186425-25-2.mol

Synonyms:Toluene-4-sulfonic acid (2S,3R,4R)-3-hydroxy-2,4-dimethyl-hex-5-enyl ester

Chemical Property of Toluene-4-sulfonic acid (2S,3R,4R)-3-hydroxy-2,4-dimethyl-hex-5-enyl ester

Chemical Property:

Purity/Quality:

Safty Information:

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Technology Process of Toluene-4-sulfonic acid (2S,3R,4R)-3-hydroxy-2,4-dimethyl-hex-5-enyl ester

There total 2 articles about Toluene-4-sulfonic acid (2S,3R,4R)-3-hydroxy-2,4-dimethyl-hex-5-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: 93.0%

p-toluenesulfonyl chloride (98-59-9) + (2S,3R,4R)-2,4-Dimethyl-hex-5-ene-1,3-diol (186425-24-1) → Toluene-4-sulfonic acid (2S,3R,4R)-3-hydroxy-2,4-dimethyl-hex-5-enyl ester (186425-25-2)

Guidance literature:

With pyridine; In dichloromethane; for 19h;

DOI:10.1016/S0040-4039(96)02132-6

Reference yield:

(3R,4R,5S)-6-(tert-butyldiphenylsiloxy)-4-hydroxy-3,5-dimethylhexan-1-ene (91751-27-8,91797-99-8,91798-00-4,91798-01-5,106357-24-8,106357-26-0,106357-27-1,106357-25-9) → Toluene-4-sulfonic acid (2S,3R,4R)-3-hydroxy-2,4-dimethyl-hex-5-enyl ester (186425-25-2)

Guidance literature:

Multi-step reaction with 2 steps

1: 93 percent / TBAF / tetrahydrofuran / 2 h

2: 93 percent / pyridine / CH₂Cl₂ / 19 h

With pyridine; tetrabutyl ammonium fluoride; In tetrahydrofuran; dichloromethane;

DOI:10.1016/S0040-4039(96)02132-6

Reference yield: 99.0%

t-butyldimethylsiyl triflate (69739-34-0) + Toluene-4-sulfonic acid (2S,3R,4R)-3-hydroxy-2,4-dimethyl-hex-5-enyl ester (186425-25-2) → Toluene-4-sulfonic acid (2S,3R,4R)-3-(tert-butyl-dimethyl-silanyloxy)-2,4-dimethyl-hex-5-enyl ester (186425-10-5)

Guidance literature:

With 2,6-dimethylpyridine; In dichloromethane; for 1.5h;

DOI:10.1016/S0040-4039(96)02132-6

upstream raw materials:

p-toluenesulfonyl chloride

(2S,3R,4R)-2,4-Dimethyl-hex-5-ene-1,3-diol

(3R,4R,5S)-6-(tert-butyldiphenylsiloxy)-4-hydroxy-3,5-dimethylhexan-1-ene

Downstream raw materials:

Toluene-4-sulfonic acid (2S,3R,4R)-3-(tert-butyl-dimethyl-silanyloxy)-2,4-dimethyl-hex-5-enyl ester