(2R,3S,4S)-(1-benzyl-2-cyano-4-isopropyl-azetidin-3-yl)-acetic acid ethyl ester

Base Information

• Chemical Name: (2R,3S,4S)-(1-benzyl-2-cyano-4-isopropyl-azetidin-3-yl)-acetic acid ethyl ester
• CAS No.: 873197-03-6
• Molecular Formula: C₁₈H₂₄N₂O₂
• Molecular Weight: 300.401
• Mol file: 873197-03-6.mol

Synonyms:(2R,3S,4S)-(1-benzyl-2-cyano-4-isopropyl-azetidin-3-yl)-acetic acid ethyl ester

Chemical Property of (2R,3S,4S)-(1-benzyl-2-cyano-4-isopropyl-azetidin-3-yl)-acetic acid ethyl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (2R,3S,4S)-(1-benzyl-2-cyano-4-isopropyl-azetidin-3-yl)-acetic acid ethyl ester

There total 7 articles about (2R,3S,4S)-(1-benzyl-2-cyano-4-isopropyl-azetidin-3-yl)-acetic acid ethyl 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: 61.0%

(2E,4S)-4-(benzyl-cyanomethyl-amino)-5-metyl-hex-2-enoic acid ethyl ester (873196-97-5) → (2S,3S,4S)-(1-benzyl-2-cyano-4-isopropyl-azetidin-3-yl)-acetic acid ethyl ester (873197-04-7) + (2R,3S,4S)-(1-benzyl-2-cyano-4-isopropyl-azetidin-3-yl)-acetic acid ethyl ester (873197-03-6)

Guidance literature:

With lithium hexamethyldisilazane; In tetrahydrofuran; at -78 - -10 ℃; for 2h;

DOI:10.1039/b509514j

Reference yield:

[Benzyl-((S)-1-formyl-2-methyl-propyl)-amino]-acetonitrile → (2R,3S,4S)-(1-benzyl-2-cyano-4-isopropyl-azetidin-3-yl)-acetic acid ethyl ester (873197-03-6)

Guidance literature:

Multi-step reaction with 2 steps

1: CH₂Cl₂ / -78 - 20 °C

2: 26 percent / LiHMDS / tetrahydrofuran / 2 h / -78 - -10 °C

With lithium hexamethyldisilazane; In tetrahydrofuran; dichloromethane; 1: Wittig olefination;

DOI:10.1039/b509514j

Reference yield:

(S)-N-benzyl-N-cyanomethyl-valinol (873196-94-2) → (2R,3S,4S)-(1-benzyl-2-cyano-4-isopropyl-azetidin-3-yl)-acetic acid ethyl ester (873197-03-6)

Guidance literature:

Multi-step reaction with 3 steps

1: oxalyl chloride; DMSO; Et₃N / CH₂Cl₂ / 0.5 h / -78 °C

2: CH₂Cl₂ / -78 - 20 °C

3: 26 percent / LiHMDS / tetrahydrofuran / 2 h / -78 - -10 °C

With oxalyl dichloride; dimethyl sulfoxide; triethylamine; lithium hexamethyldisilazane; In tetrahydrofuran; dichloromethane; 1: Swern oxidation / 2: Wittig olefination;

DOI:10.1039/b509514j

upstream raw materials:

(2E,4S)-4-(benzyl-cyanomethyl-amino)-5-metyl-hex-2-enoic acid ethyl ester

(S)-N-benzyl-N-cyanomethyl-valinol

(S)-valinol

N-benzyl-L-valinol