(1R,2S,3S,4S)-tert-butyl 3-benzoyl-6-(tert-butyldimethylsilyloxy)-5-((E)-4-ethoxy-4-oxobut-2-enyl)-2'-oxospiro[bicyclo[2.2.2]oct[5]ene-2,3'-indoline]-1'-carboxylate

Base Information

• Chemical Name: (1R,2S,3S,4S)-tert-butyl 3-benzoyl-6-(tert-butyldimethylsilyloxy)-5-((E)-4-ethoxy-4-oxobut-2-enyl)-2'-oxospiro[bicyclo[2.2.2]oct[5]ene-2,3'-indoline]-1'-carboxylate
• CAS No.: 1392201-51-2
• Molecular Formula: C₃₉H₄₉NO₇Si
• Molecular Weight: 671.906
• Mol file: 1392201-51-2.mol

Synonyms:

Chemical Property of (1R,2S,3S,4S)-tert-butyl 3-benzoyl-6-(tert-butyldimethylsilyloxy)-5-((E)-4-ethoxy-4-oxobut-2-enyl)-2'-oxospiro[bicyclo[2.2.2]oct[5]ene-2,3'-indoline]-1'-carboxylate

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (1R,2S,3S,4S)-tert-butyl 3-benzoyl-6-(tert-butyldimethylsilyloxy)-5-((E)-4-ethoxy-4-oxobut-2-enyl)-2'-oxospiro[bicyclo[2.2.2]oct[5]ene-2,3'-indoline]-1'-carboxylate

There total 4 articles about (1R,2S,3S,4S)-tert-butyl 3-benzoyl-6-(tert-butyldimethylsilyloxy)-5-((E)-4-ethoxy-4-oxobut-2-enyl)-2'-oxospiro[bicyclo[2.2.2]oct[5]ene-2,3'-indoline]-1'-carboxylate 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:

(E)-tert-butyl 2-oxo-3-(2-oxo-2-phenylethylidene)indoline-1-carboxylate (1279108-46-1) → (1R,2S,3S,4S)-tert-butyl 3-benzoyl-6-(tert-butyldimethylsilyloxy)-5-((E)-4-ethoxy-4-oxobut-2-enyl)-2'-oxospiro[bicyclo[2.2.2]oct[5]ene-2,3'-indoline]-1'-carboxylate (1392201-51-2)

Guidance literature:

Multi-step reaction with 2 steps

1: (2S)-2-{diphenyl[(trimethylsilyl)oxy]methyl}pyrrolidine; o-fluoro-benzoic acid / chloroform-d1 / 20 h / 20 °C

2: chloroform-d1 / 24 h / 40 °C

With (2S)-2-{diphenyl[(trimethylsilyl)oxy]methyl}pyrrolidine; o-fluoro-benzoic acid; In chloroform-d1; 1: Diels-Alder reaction / 2: Wittig reaction;

DOI:10.1021/ja3068269

Reference yield:

(E)-3-(2-oxo-2-phenylethylidene)indolin-2-one (31541-36-3,34880-79-0,56680-29-6) → (1R,2S,3S,4S)-tert-butyl 3-benzoyl-6-(tert-butyldimethylsilyloxy)-5-((E)-4-ethoxy-4-oxobut-2-enyl)-2'-oxospiro[bicyclo[2.2.2]oct[5]ene-2,3'-indoline]-1'-carboxylate (1392201-51-2)

Guidance literature:

Multi-step reaction with 3 steps

1: dmap / acetonitrile / 20 °C

2: (2S)-2-{diphenyl[(trimethylsilyl)oxy]methyl}pyrrolidine; o-fluoro-benzoic acid / chloroform-d1 / 20 h / 20 °C

3: chloroform-d1 / 24 h / 40 °C

With (2S)-2-{diphenyl[(trimethylsilyl)oxy]methyl}pyrrolidine; dmap; o-fluoro-benzoic acid; In chloroform-d1; acetonitrile; 2: Diels-Alder reaction / 3: Wittig reaction;

DOI:10.1021/ja3068269

Reference yield:

di-tert-butyl dicarbonate (24424-99-5) → (1R,2S,3S,4S)-tert-butyl 3-benzoyl-6-(tert-butyldimethylsilyloxy)-5-((E)-4-ethoxy-4-oxobut-2-enyl)-2'-oxospiro[bicyclo[2.2.2]oct[5]ene-2,3'-indoline]-1'-carboxylate (1392201-51-2)

Guidance literature:

Multi-step reaction with 3 steps

1: dmap / acetonitrile / 20 °C

2: (2S)-2-{diphenyl[(trimethylsilyl)oxy]methyl}pyrrolidine; o-fluoro-benzoic acid / chloroform-d1 / 20 h / 20 °C

3: chloroform-d1 / 24 h / 40 °C

With (2S)-2-{diphenyl[(trimethylsilyl)oxy]methyl}pyrrolidine; dmap; o-fluoro-benzoic acid; In chloroform-d1; acetonitrile; 2: Diels-Alder reaction / 3: Wittig reaction;

DOI:10.1021/ja3068269

upstream raw materials:

(E)-tert-butyl 2-oxo-3-(2-oxo-2-phenylethylidene)indoline-1-carboxylate

ethyl (triphenylphosphoranylidene)acetate

(E)-3-(2-oxo-2-phenylethylidene)indolin-2-one

di-tert-butyl dicarbonate