(5S)-(-)-2-benzylidene-5-butyl-3-oxo-pyrrolidine-1-carboxylic acid tert-butyl ester

Base Information

• Chemical Name: (5S)-(-)-2-benzylidene-5-butyl-3-oxo-pyrrolidine-1-carboxylic acid tert-butyl ester
• CAS No.: 896136-89-3
• Molecular Formula: C₂₀H₂₇NO₃
• Molecular Weight: 329.439
• Mol file: 896136-89-3.mol

Synonyms:(5S)-(-)-2-benzylidene-5-butyl-3-oxo-pyrrolidine-1-carboxylic acid tert-butyl ester

Chemical Property of (5S)-(-)-2-benzylidene-5-butyl-3-oxo-pyrrolidine-1-carboxylic acid tert-butyl ester

Chemical Property:

Purity/Quality:

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Technology Process of (5S)-(-)-2-benzylidene-5-butyl-3-oxo-pyrrolidine-1-carboxylic acid tert-butyl ester

There total 1 articles about (5S)-(-)-2-benzylidene-5-butyl-3-oxo-pyrrolidine-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: 66.0%

benzaldehyde (100-52-7) + (2R,5S)-(-)-5-butyl-2-(dimethoxyphosphoryl)-3-oxopyrrolidine-1-carboxylic acid tert-butyl ester → (5S)-(-)-2-benzylidene-5-butyl-3-oxo-pyrrolidine-1-carboxylic acid tert-butyl ester (896136-89-3)

Guidance literature:

With 1,8-diazabicyclo[5.4.0]undec-7-ene; lithium chloride; In acetonitrile; at 20 ℃; for 16h;

DOI:10.1021/ol060521c

Reference yield: 84.0%

(5S)-(-)-2-benzylidene-5-butyl-3-oxo-pyrrolidine-1-carboxylic acid tert-butyl ester (896136-89-3) → (2R,5S)-(-)-2-benzyl-5-butyl-3-oxo-pyrrolidine-1-carboxylic acid tert-butyl ester (896136-93-9)

Guidance literature:

With hydrogen; palladium on activated charcoal; In methanol; for 4h;

DOI:10.1021/ol060521c

Reference yield:

(5S)-(-)-2-benzylidene-5-butyl-3-oxo-pyrrolidine-1-carboxylic acid tert-butyl ester (896136-89-3) → (2R,3R,5S)-2-Benzyl-5-butyl-3-hydroxy-3-methyl-pyrrolidine-1-carboxylic acid tert-butyl ester

Guidance literature:

Multi-step reaction with 2 steps

1: 84 percent / H₂ / Pd/C / methanol / 4 h

2: 65 percent / tetrahydrofuran; diethyl ether / -78 - 20 °C

With hydrogen; palladium on activated charcoal; In tetrahydrofuran; methanol; diethyl ether;

DOI:10.1021/ol060521c

upstream raw materials:

benzaldehyde

Downstream raw materials:

(2R,5S)-(-)-2-benzyl-5-butyl-3-oxo-pyrrolidine-1-carboxylic acid tert-butyl ester