2-(tert-butoxycarbonylamino-methyl)-pyrrolidine-1,2-dicarboxylic acid 1-benzyl ester 2-methyl ester

Base Information

• Chemical Name: 2-(tert-butoxycarbonylamino-methyl)-pyrrolidine-1,2-dicarboxylic acid 1-benzyl ester 2-methyl ester
• CAS No.: 914389-52-9
• Molecular Formula: C₂₀H₂₈N₂O₆
• Molecular Weight: 392.452
• Mol file: 914389-52-9.mol

Synonyms:2-(tert-butoxycarbonylamino-methyl)-pyrrolidine-1,2-dicarboxylic acid 1-benzyl ester 2-methyl ester

Chemical Property of 2-(tert-butoxycarbonylamino-methyl)-pyrrolidine-1,2-dicarboxylic acid 1-benzyl ester 2-methyl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 2-(tert-butoxycarbonylamino-methyl)-pyrrolidine-1,2-dicarboxylic acid 1-benzyl ester 2-methyl ester

There total 8 articles about 2-(tert-butoxycarbonylamino-methyl)-pyrrolidine-1,2-dicarboxylic acid 1-benzyl ester 2-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: 98.0%

(4R)-5-benzyloxycarbonyl-2-(tert-butoxycarbonyl)-2,5-diazaspiro[3,4]octan-1-one (914389-51-8) + methanol (67-56-1) → 2-(tert-butoxycarbonylamino-methyl)-pyrrolidine-1,2-dicarboxylic acid 1-benzyl ester 2-methyl ester (914389-52-9)

Guidance literature:

With potassium cyanide;

DOI:10.1021/jo061189l

Reference yield:

2-oxomethylene-pyrrolidine-1-carboxylic acid benzyl ester → 2-(tert-butoxycarbonylamino-methyl)-pyrrolidine-1,2-dicarboxylic acid 1-benzyl ester 2-methyl ester (914389-52-9)

Guidance literature:

Multi-step reaction with 7 steps

1.1: BF₃*Et₂O / CH₂Cl₂ / 12 h / -40 - 20 °C

2.1: 98 percent / H₂ / Pd/C / ethyl acetate; methanol / 760 Torr

3.1: L-Boc-Phe-OH / ethyl acetate; hexane

3.2: aq. NaHCO₃ / CH₂Cl₂ / 0.17 h

4.1: 97 percent / NaHCO₃ / ethyl acetate; H₂O / 2 h / 20 °C

5.1: aq. CAN / acetonitrile / 0 °C

6.1: 0.652 g / DMAP / acetonitrile / 0 - 20 °C

7.1: 98 percent / KCN

With dmap; potassium cyanide; ammonium cerium(IV) nitrate; N-tert-butoxycarbonyl-L-phenylalanine; boron trifluoride diethyl etherate; hydrogen; sodium hydrogencarbonate; palladium on activated charcoal; In methanol; hexane; dichloromethane; water; ethyl acetate; acetonitrile;

DOI:10.1021/jo061189l

Reference yield:

(+/-)-5-benzyloxycarbonyl-2-(4-methoxyphenyl)-2,5-diazaspiro[3,4]octan-1-one (914389-32-5) → 2-(tert-butoxycarbonylamino-methyl)-pyrrolidine-1,2-dicarboxylic acid 1-benzyl ester 2-methyl ester (914389-52-9)

Guidance literature:

Multi-step reaction with 6 steps

1.1: 98 percent / H₂ / Pd/C / ethyl acetate; methanol / 760 Torr

2.1: L-Boc-Phe-OH / ethyl acetate; hexane

2.2: aq. NaHCO₃ / CH₂Cl₂ / 0.17 h

3.1: 97 percent / NaHCO₃ / ethyl acetate; H₂O / 2 h / 20 °C

4.1: aq. CAN / acetonitrile / 0 °C

5.1: 0.652 g / DMAP / acetonitrile / 0 - 20 °C

6.1: 98 percent / KCN

With dmap; potassium cyanide; ammonium cerium(IV) nitrate; N-tert-butoxycarbonyl-L-phenylalanine; hydrogen; sodium hydrogencarbonate; palladium on activated charcoal; In methanol; hexane; water; ethyl acetate; acetonitrile;

DOI:10.1021/jo061189l

upstream raw materials:

(4R)-5-benzyloxycarbonyl-2-(tert-butoxycarbonyl)-2,5-diazaspiro[3,4]octan-1-one

methanol

(+/-)-2-(4-methoxyphenyl)-2,5-diazaspiro[3,4]octan-1-one

(4R)-2-(4-methoxyphenyl)-2,5-diazaspiro[3,4]octan-1-one

Downstream raw materials:

(R)-2-({[(R)-1-Benzyloxycarbonyl-2-(tert-butoxycarbonylamino-methyl)-pyrrolidine-2-carbonyl]-amino}-methyl)-pyrrolidine-1,2-dicarboxylic acid 1-benzyl ester 2-methyl ester

(R)-2-({[(R)-1-Benzyloxycarbonyl-2-({[(R)-1-benzyloxycarbonyl-2-(tert-butoxycarbonylamino-methyl)-pyrrolidine-2-carbonyl]-amino}-methyl)-pyrrolidine-2-carbonyl]-amino}-methyl)-pyrrolidine-1,2-dicarboxylic acid 1-benzyl ester 2-methyl ester