(2R,4S)-4-tert-butoxycarbonylmethoxy-2-(4-tosyloxymethyl)-4-hydroxypyrrolidine-1-carboxylic acid tert-butyl ester

Base Information

• Chemical Name: (2R,4S)-4-tert-butoxycarbonylmethoxy-2-(4-tosyloxymethyl)-4-hydroxypyrrolidine-1-carboxylic acid tert-butyl ester
• CAS No.: 1338549-34-0
• Molecular Formula: C₂₃H₃₅NO₈S
• Molecular Weight: 485.599
• Mol file: 1338549-34-0.mol

Synonyms:(2R,4S)-4-tert-butoxycarbonylmethoxy-2-(4-tosyloxymethyl)-4-hydroxypyrrolidine-1-carboxylic acid tert-butyl ester

Chemical Property of (2R,4S)-4-tert-butoxycarbonylmethoxy-2-(4-tosyloxymethyl)-4-hydroxypyrrolidine-1-carboxylic acid tert-butyl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (2R,4S)-4-tert-butoxycarbonylmethoxy-2-(4-tosyloxymethyl)-4-hydroxypyrrolidine-1-carboxylic acid tert-butyl ester

There total 9 articles about (2R,4S)-4-tert-butoxycarbonylmethoxy-2-(4-tosyloxymethyl)-4-hydroxypyrrolidine-1-carboxylic acid tert-butyl 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: 84.0%

(2R,4S)-4-tert-butoxycarbonylmethoxy-2-hydroxymethyl-4-hydroxy-pyrrolidine-1-carboxylic acid tert-butyl ester (1338549-33-9) + p-toluenesulfonyl chloride (98-59-9) → (2R,4S)-4-tert-butoxycarbonylmethoxy-2-(4-tosyloxymethyl)-4-hydroxypyrrolidine-1-carboxylic acid tert-butyl ester (1338549-34-0)

Guidance literature:

With pyridine; at 0 - 20 ℃;

DOI:10.1002/jhet.627

Reference yield:

(2R,4R)-4-hydroxyproline-1,2-dicarboxylic acid 1-tert-butyl 2-ethyl ester (77450-00-1) → (2R,4S)-4-tert-butoxycarbonylmethoxy-2-(4-tosyloxymethyl)-4-hydroxypyrrolidine-1-carboxylic acid tert-butyl ester (1338549-34-0)

Guidance literature:

Multi-step reaction with 5 steps

1: lithium borohydride / tetrahydrofuran / 0 - 20 °C / Inert atmosphere

2: 1H-imidazole / dichloromethane / 20 °C / Cooling with ice

3: tetra(n-butyl)ammonium hydrogensulfate; sodium hydroxide / water; benzene / 10 - 20 °C

4: tetrabutyl ammonium fluoride / tetrahydrofuran / 20 °C

5: pyridine / 0 - 20 °C

With pyridine; 1H-imidazole; lithium borohydride; tetrabutyl ammonium fluoride; tetra(n-butyl)ammonium hydrogensulfate; sodium hydroxide; In tetrahydrofuran; dichloromethane; water; benzene;

DOI:10.1002/jhet.627

Reference yield:

(2S,4R)-ethyl 4-hydroxypyrrolidine-2-carboxylate (132666-67-2) → (2R,4S)-4-tert-butoxycarbonylmethoxy-2-(4-tosyloxymethyl)-4-hydroxypyrrolidine-1-carboxylic acid tert-butyl ester (1338549-34-0)

Guidance literature:

Multi-step reaction with 6 steps

1: sodium hydrogencarbonate / 1,4-dioxane; water / 0 - 20 °C

2: lithium borohydride / tetrahydrofuran / 0 - 20 °C / Inert atmosphere

3: 1H-imidazole / dichloromethane / 20 °C / Cooling with ice

4: tetra(n-butyl)ammonium hydrogensulfate; sodium hydroxide / water; benzene / 10 - 20 °C

5: tetrabutyl ammonium fluoride / tetrahydrofuran / 20 °C

6: pyridine / 0 - 20 °C

With pyridine; 1H-imidazole; lithium borohydride; tetrabutyl ammonium fluoride; tetra(n-butyl)ammonium hydrogensulfate; sodium hydrogencarbonate; sodium hydroxide; In tetrahydrofuran; 1,4-dioxane; dichloromethane; water; benzene;

DOI:10.1002/jhet.627

upstream raw materials:

(2R,4S)-2-(tert-butyldimethylsilanyloxymethyl)-4-hydroxy-pyrrolidine-1-carboxylic acid tert-butyl ester

(2R,4S)-4-tert-butoxycarbonylmethoxy-2-(tert-butyldimethylsilanyloxymethyl)pyrrolidine-1-carboxylic acid tert-butyl ester

(2R,4S)-4-tert-butoxycarbonylmethoxy-2-hydroxymethyl-4-hydroxy-pyrrolidine-1-carboxylic acid tert-butyl ester

p-toluenesulfonyl chloride

Downstream raw materials:

(2R,4S)-2-(N₃-benzoylthymine-1-ylmethyl)-4-carboxymethoxy-pyrrolidine-1-carboxylic acid 9H-fluoren-9-ylmethyl ester

(2R,4S)-2-(N₃-benzoylthymine-1-ylmethyl)-4-tert-butoxycarbonylmethyoxypyrrolidine-1-carboxylic acid tert-butyl ester