(2R,5S)-2-Butyl-5-(2-oxo-ethyl)-pyrrolidine-1-carboxylic acid benzyl ester

Base Information

• Chemical Name: (2R,5S)-2-Butyl-5-(2-oxo-ethyl)-pyrrolidine-1-carboxylic acid benzyl ester
• CAS No.: 182698-60-8
• Molecular Formula: C₁₈H₂₅NO₃
• Molecular Weight: 303.401
• Mol file: 182698-60-8.mol

Synonyms:(2R,5S)-2-Butyl-5-(2-oxo-ethyl)-pyrrolidine-1-carboxylic acid benzyl ester

Chemical Property of (2R,5S)-2-Butyl-5-(2-oxo-ethyl)-pyrrolidine-1-carboxylic acid benzyl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (2R,5S)-2-Butyl-5-(2-oxo-ethyl)-pyrrolidine-1-carboxylic acid benzyl ester

There total 14 articles about (2R,5S)-2-Butyl-5-(2-oxo-ethyl)-pyrrolidine-1-carboxylic acid benzyl 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: 70.0%

(2S,5R)-2-Allyl-5-butyl-pyrrolidine-1-carboxylic acid benzyl ester (214334-43-7) → (2R,5S)-2-Butyl-5-(2-oxo-ethyl)-pyrrolidine-1-carboxylic acid benzyl ester (182698-60-8)

Guidance literature:

With sodium periodate; osmium(VIII) oxide; In tetrahydrofuran; water; for 0.333333h;

DOI:10.1002/(SICI)1099-0690(199809)1998:9<1955::AID-EJOC1955>3.0.CO;2-U

Reference yield:

(2R,5S)-2-Butyl-5-methoxycarbonylmethyl-pyrrolidine-1-carboxylic acid benzyl ester (182698-62-0) → (2R,5S)-2-Butyl-5-(2-oxo-ethyl)-pyrrolidine-1-carboxylic acid benzyl ester (182698-60-8)

Guidance literature:

With diisobutylaluminium hydride; In toluene; at -78 ℃; Yield given;

DOI:10.1016/0957-4166(96)00273-X

Reference yield:

(S)-(1-tert-butoxycarbonyl-5-oxopyrrolidin-2-yl)-methyl-4-methylbenzenesulfonate (135697-21-1) → (2R,5S)-2-Butyl-5-(2-oxo-ethyl)-pyrrolidine-1-carboxylic acid benzyl ester (182698-60-8)

Guidance literature:

Multi-step reaction with 8 steps

1: 10.1 g / LiEt₃BH / CH₂Cl₂ / 4 h / -78 °C

2: 43 percent / CHCl₃ / 24 h / Heating

3: TiCl₄ / CH₂Cl₂ / -78 - 20 °C

4: 100 percent / KOH / dioxane / 64 h / Heating

5: 87 percent / Na₂CO₃ / CH₂Cl₂ / 20 °C

6: 98 percent / NEt₃ / CH₂Cl₂ / 4 h / 20 °C

7: 78 percent / CuI / diethyl ether / 0.5 h / -35 - -30 °C

8: 70 percent / OsO₄, NaIO₄ / tetrahydrofuran; H₂O / 0.33 h

With potassium hydroxide; sodium periodate; copper(l) iodide; osmium(VIII) oxide; titanium tetrachloride; lithium triethylborohydride; sodium carbonate; triethylamine; In tetrahydrofuran; 1,4-dioxane; diethyl ether; dichloromethane; chloroform; water;

DOI:10.1002/(SICI)1099-0690(199809)1998:9<1955::AID-EJOC1955>3.0.CO;2-U

upstream raw materials:

(2R,5S)-2-Butyl-5-methoxycarbonylmethyl-pyrrolidine-1-carboxylic acid benzyl ester

(2S,5R)-2-Allyl-5-butyl-pyrrolidine-1-carboxylic acid benzyl ester

(S)-(1-tert-butoxycarbonyl-5-oxopyrrolidin-2-yl)-methyl-4-methylbenzenesulfonate

benzyl chloroformate

Downstream raw materials:

(2R,5S)-2-Butyl-5-((E)-4-oxo-hept-2-enyl)-pyrrolidine-1-carboxylic acid benzyl ester

(2R,5R)-N-<(benzyloxy)carbonyl>-5-butyl-2-(4-oxoheptyl)pyrrolidine

(-)-indolizidine 223AB

(2R,5R)-2-Butyl-5-(5,5-diethoxy-4-oxo-heptyl)-pyrrolidine-1-carboxylic acid benzyl ester