N-<(S)-1-tert-butyloxycarbonyl-2-methylpropyl>-(5R)-5-amino-5-(4-chlorophenyl)-3-methoxypent-2-enoic acid methyl ester

Base Information

• Chemical Name: N-<(S)-1-tert-butyloxycarbonyl-2-methylpropyl>-(5R)-5-amino-5-(4-chlorophenyl)-3-methoxypent-2-enoic acid methyl ester
• CAS No.: 139405-05-3
• Molecular Formula: C₂₂H₃₂ClNO₅
• Molecular Weight: 425.953
• Mol file: 139405-05-3.mol

Synonyms:

Chemical Property of N-<(S)-1-tert-butyloxycarbonyl-2-methylpropyl>-(5R)-5-amino-5-(4-chlorophenyl)-3-methoxypent-2-enoic acid methyl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of N-<(S)-1-tert-butyloxycarbonyl-2-methylpropyl>-(5R)-5-amino-5-(4-chlorophenyl)-3-methoxypent-2-enoic acid methyl ester

There total 4 articles about N-<(S)-1-tert-butyloxycarbonyl-2-methylpropyl>-(5R)-5-amino-5-(4-chlorophenyl)-3-methoxypent-2-enoic acid methyl 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: 67.0%

((E)-1,3-Dimethoxy-buta-1,3-dienyloxy)-trimethyl-silane (90857-62-8) + (S)-2-{[1-(4-Chloro-phenyl)-meth-(E)-ylidene]-amino}-3-methyl-butyric acid tert-butyl ester (132599-46-3) → (E)-5-((S)-1-tert-Butoxycarbonyl-2-methyl-propylamino)-5-(4-chloro-phenyl)-3-methoxy-pent-2-enoic acid methyl ester (132599-54-3,139404-97-0,139405-05-3)

Guidance literature:

With ethylaluminum dichloride; In dichloromethane; -78 deg C -> 20 deg C;

Reference yield:

tert-butyl L-valinate (13211-31-9) → N-<(S)-1-tert-butyloxycarbonyl-2-methylpropyl>-(5R)-5-amino-5-(4-chlorophenyl)-3-methoxypent-2-enoic acid methyl ester (139405-05-3)

Guidance literature:

Multi-step reaction with 2 steps

1: diethyl ether / 0.5 h

2: 1.) EtAlCl₂ / 1.) CH₂Cl₂, -78 deg C, 2 min, 2.) CH₂Cl₂, a) -78 deg C, 15 min, b) from -78 deg C to RT, 1.5 h

With ethylaluminum dichloride; In diethyl ether;

DOI:10.1016/S0957-4166(00)80023-3

Reference yield:

4-chlorobenzaldehyde (104-88-1) → N-<(S)-1-tert-butyloxycarbonyl-2-methylpropyl>-(5R)-5-amino-5-(4-chlorophenyl)-3-methoxypent-2-enoic acid methyl ester (139405-05-3)

Guidance literature:

Multi-step reaction with 2 steps

1: diethyl ether / 0.5 h

2: 1.) EtAlCl₂ / 1.) CH₂Cl₂, -78 deg C, 2 min, 2.) CH₂Cl₂, a) -78 deg C, 15 min, b) from -78 deg C to RT, 1.5 h

With ethylaluminum dichloride; In diethyl ether;

DOI:10.1016/S0957-4166(00)80023-3

upstream raw materials:

((E)-1,3-Dimethoxy-buta-1,3-dienyloxy)-trimethyl-silane

(S)-2-{[1-(4-Chloro-phenyl)-meth-(E)-ylidene]-amino}-3-methyl-butyric acid tert-butyl ester

(S)-2-{[1-(4-Chloro-phenyl)-meth-(E)-ylidene]-amino}-3-methyl-butyric acid tert-butyl ester

tert-butyl L-valinate