5-Methoxy-2-oxo-1-(2-trimethylsilanyl-ethoxymethyl)-1,2-dihydro-spiro[indole-3,3'-pyrrolidine]-1'-carboxylic acid benzyl ester

Base Information

• Chemical Name: 5-Methoxy-2-oxo-1-(2-trimethylsilanyl-ethoxymethyl)-1,2-dihydro-spiro[indole-3,3'-pyrrolidine]-1'-carboxylic acid benzyl ester
• CAS No.: 146309-31-1
• Molecular Formula: C₂₆H₃₄N₂O₅Si
• Molecular Weight: 482.652
• Mol file: 146309-31-1.mol

Synonyms:5-Methoxy-2-oxo-1-(2-trimethylsilanyl-ethoxymethyl)-1,2-dihydro-spiro[indole-3,3'-pyrrolidine]-1'-carboxylic acid benzyl ester

Chemical Property of 5-Methoxy-2-oxo-1-(2-trimethylsilanyl-ethoxymethyl)-1,2-dihydro-spiro[indole-3,3'-pyrrolidine]-1'-carboxylic acid benzyl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 5-Methoxy-2-oxo-1-(2-trimethylsilanyl-ethoxymethyl)-1,2-dihydro-spiro[indole-3,3'-pyrrolidine]-1'-carboxylic acid benzyl ester

There total 10 articles about 5-Methoxy-2-oxo-1-(2-trimethylsilanyl-ethoxymethyl)-1,2-dihydro-spiro[indole-3,3'-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%

3-[(2-Bromo-4-methoxy-phenyl)-(2-trimethylsilanyl-ethoxymethyl)-carbamoyl]-2,5-dihydro-pyrrole-1-carboxylic acid benzyl ester (146309-30-0) → 8-Methoxy-4-oxo-5-(2-trimethylsilanyl-ethoxymethyl)-1,3,3a,4,5,9b-hexahydro-pyrrolo[3,4-c]quinoline-2-carboxylic acid benzyl ester + 5-Methoxy-2-oxo-1-(2-trimethylsilanyl-ethoxymethyl)-1,2-dihydro-spiro[indole-3,3'-pyrrolidine]-1'-carboxylic acid benzyl ester (146309-31-1)

Guidance literature:

With 2,2'-azobis(isobutyronitrile); tri-n-butyl-tin hydride; In toluene; for 3h; Heating;

DOI:10.1039/c39920001767

Reference yield:

ethyl 2-(benzyloxycarbonylamino)ethanoate (1145-81-9) → 5-Methoxy-2-oxo-1-(2-trimethylsilanyl-ethoxymethyl)-1,2-dihydro-spiro[indole-3,3'-pyrrolidine]-1'-carboxylic acid benzyl ester (146309-31-1)

Guidance literature:

Multi-step reaction with 9 steps

1: 83 percent / Na / toluene

2: 85 percent / NaCNBH₃ / methanol / pH 3-4

3: pyridine, 4-dimethylaminopyridine

4: 1,8-diazabicyclo<5.4.0>undec-7-ene (DBU) / toluene / 80 °C

5: 89 percent / aq. KOH / dioxane / 0.75 h / 50 °C

6: NEt₃, thionyl chloride / 1,2-dimethoxy-ethane / 0 °C

7: diisopropylethylamine

8: 1.) KH / 1.) THF, RT, 2.) THF

9: 70 percent / tributyltin hydride (TBTH), azoisobutyronitrile (AIBN) / toluene / 3 h / Heating

With pyridine; dmap; potassium hydroxide; thionyl chloride; 2,2'-azobis(isobutyronitrile); tri-n-butyl-tin hydride; sodium; potassium hydride; sodium cyanoborohydride; 1,8-diazabicyclo[5.4.0]undec-7-ene; triethylamine; N-ethyl-N,N-diisopropylamine; In 1,4-dioxane; methanol; 1,2-dimethoxyethane; toluene;

DOI:10.1039/c39920001767

Reference yield:

2-bromo-4-methoxyaniline (32338-02-6) → 5-Methoxy-2-oxo-1-(2-trimethylsilanyl-ethoxymethyl)-1,2-dihydro-spiro[indole-3,3'-pyrrolidine]-1'-carboxylic acid benzyl ester (146309-31-1)

Guidance literature:

Multi-step reaction with 3 steps

1: diisopropylethylamine

2: 1.) KH / 1.) THF, RT, 2.) THF

3: 70 percent / tributyltin hydride (TBTH), azoisobutyronitrile (AIBN) / toluene / 3 h / Heating

With 2,2'-azobis(isobutyronitrile); tri-n-butyl-tin hydride; potassium hydride; N-ethyl-N,N-diisopropylamine; In toluene;

DOI:10.1039/c39920001767

upstream raw materials:

3-[(2-Bromo-4-methoxy-phenyl)-(2-trimethylsilanyl-ethoxymethyl)-carbamoyl]-2,5-dihydro-pyrrole-1-carboxylic acid benzyl ester

ethyl 2-(benzyloxycarbonylamino)ethanoate

2-bromo-4-methoxyaniline

1-benzyl 3-ethyl 2,5-dihydro-1H-pyrrol-1,3-dicarboxylate

Downstream raw materials:

5-Methoxy-2-oxo-1,2-dihydro-spiro[indole-3,3'-pyrrolidine]-1'-carboxylic acid benzyl ester