(8S)-8-methyl-6-methylene-1-(toluene-4-sulfonyl)-1,6,7,8-tetrahydro-1-aza-as-indacene

Base Information

• Chemical Name: (8S)-8-methyl-6-methylene-1-(toluene-4-sulfonyl)-1,6,7,8-tetrahydro-1-aza-as-indacene
• CAS No.: 1365987-86-5
• Molecular Formula: C₂₀H₁₉NO₂S
• Molecular Weight: 337.442
• Mol file: 1365987-86-5.mol

Synonyms:(8S)-8-methyl-6-methylene-1-(toluene-4-sulfonyl)-1,6,7,8-tetrahydro-1-aza-as-indacene

Chemical Property of (8S)-8-methyl-6-methylene-1-(toluene-4-sulfonyl)-1,6,7,8-tetrahydro-1-aza-as-indacene

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (8S)-8-methyl-6-methylene-1-(toluene-4-sulfonyl)-1,6,7,8-tetrahydro-1-aza-as-indacene

There total 10 articles about (8S)-8-methyl-6-methylene-1-(toluene-4-sulfonyl)-1,6,7,8-tetrahydro-1-aza-as-indacene 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: 95.0%

(8S)-8-methyl-1-(toluene-4-sulfonyl)-7,8-dihydro-1H-1-aza-as-indacen-6-one (1365987-82-1) + methyl-triphenylphosphonium iodide (2065-66-9) → (8S)-8-methyl-6-methylene-1-(toluene-4-sulfonyl)-1,6,7,8-tetrahydro-1-aza-as-indacene (1365987-86-5)

Guidance literature:

methyl-triphenylphosphonium iodide; With potassium tert-butylate; In diethyl ether; at 20 ℃; for 0.5h; Inert atmosphere;

(8S)-8-methyl-1-(toluene-4-sulfonyl)-7,8-dihydro-1H-1-aza-as-indacen-6-one; In diethyl ether; at 20 ℃; for 12h; Inert atmosphere;

DOI:10.1021/ja3004733

Reference yield:

7-bromo-1H-indole (51417-51-7) → (8S)-8-methyl-6-methylene-1-(toluene-4-sulfonyl)-1,6,7,8-tetrahydro-1-aza-as-indacene (1365987-86-5)

Guidance literature:

Multi-step reaction with 9 steps

1.1: tetrakis(triphenylphosphine) palladium⁽⁰⁾ / toluene / 2 h / Inert atmosphere; Reflux

2.1: bi(allylnickel bromide); (R)-2,2'-binaphthoyl-benzyl-(S)-[1-(1-naphthylethyl)]aminoylphosphine; sodium tetrakis[(3,5-di-trifluoromethyl)phenyl]borate / dichloromethane / 3.03 h / -78 °C / 760.05 Torr

3.1: 18-crown-6 ether; potassium hydride / 1,2-dimethoxyethane / 0.5 h / 0 - 20 °C / Inert atmosphere

3.2: 14 h / 0 - 20 °C / Inert atmosphere

4.1: 9-bora-bicyclo[3.3.1]nonane / tetrahydrofuran / 1.5 h / 0 - 20 °C / Inert atmosphere

4.2: 0.5 h / 0 - 20 °C / Inert atmosphere

5.1: tetrapropylammonium perruthennate; 4-methylmorpholine N-oxide / dichloromethane / 1.33 h / 20 °C / Inert atmosphere; Molecular sieve

6.1: sodium chlorite; sodium dihydrogen phosphate monohydrate; 2-methyl-but-2-ene / tetrahydrofuran; water; tert-butyl alcohol / 1 h / 0 - 20 °C

7.1: oxalyl dichloride; N,N-dimethyl-formamide / dichloromethane / 2 h / 0 - 20 °C / Inert atmosphere

8.1: aluminum (III) chloride / dichloromethane / 0.83 h / 0 °C / Inert atmosphere; Reflux

9.1: potassium tert-butylate / diethyl ether / 0.5 h / 20 °C / Inert atmosphere

9.2: 12 h / 20 °C / Inert atmosphere

With aluminum (III) chloride; sodium chlorite; tetrakis(triphenylphosphine) palladium⁽⁰⁾; tetrapropylammonium perruthennate; sodium dihydrogen phosphate monohydrate; 2-methyl-but-2-ene; oxalyl dichloride; 18-crown-6 ether; bi(allylnickel bromide); (R)-2,2'-binaphthoyl-benzyl-(S)-[1-(1-naphthylethyl)]aminoylphosphine; potassium tert-butylate; potassium hydride; 4-methylmorpholine N-oxide; sodium tetrakis[(3,5-di-trifluoromethyl)phenyl]borate; N,N-dimethyl-formamide; 9-bora-bicyclo[3.3.1]nonane; In tetrahydrofuran; 1,2-dimethoxyethane; diethyl ether; dichloromethane; water; toluene; tert-butyl alcohol; 1.1: Stille coupling / 8.1: Friedel-Crafts acylation / 9.1: Wittig reaction / 9.2: Wittig reaction;

DOI:10.1021/ja3004733

Reference yield:

7-ethenyl-1H-indole (94239-08-4) → (8S)-8-methyl-6-methylene-1-(toluene-4-sulfonyl)-1,6,7,8-tetrahydro-1-aza-as-indacene (1365987-86-5)

Guidance literature:

Multi-step reaction with 8 steps

1.1: bi(allylnickel bromide); (R)-2,2'-binaphthoyl-benzyl-(S)-[1-(1-naphthylethyl)]aminoylphosphine; sodium tetrakis[(3,5-di-trifluoromethyl)phenyl]borate / dichloromethane / 3.03 h / -78 °C / 760.05 Torr

2.1: 18-crown-6 ether; potassium hydride / 1,2-dimethoxyethane / 0.5 h / 0 - 20 °C / Inert atmosphere

2.2: 14 h / 0 - 20 °C / Inert atmosphere

3.1: 9-bora-bicyclo[3.3.1]nonane / tetrahydrofuran / 1.5 h / 0 - 20 °C / Inert atmosphere

3.2: 0.5 h / 0 - 20 °C / Inert atmosphere

4.1: tetrapropylammonium perruthennate; 4-methylmorpholine N-oxide / dichloromethane / 1.33 h / 20 °C / Inert atmosphere; Molecular sieve

5.1: sodium chlorite; sodium dihydrogen phosphate monohydrate; 2-methyl-but-2-ene / tetrahydrofuran; water; tert-butyl alcohol / 1 h / 0 - 20 °C

6.1: oxalyl dichloride; N,N-dimethyl-formamide / dichloromethane / 2 h / 0 - 20 °C / Inert atmosphere

7.1: aluminum (III) chloride / dichloromethane / 0.83 h / 0 °C / Inert atmosphere; Reflux

8.1: potassium tert-butylate / diethyl ether / 0.5 h / 20 °C / Inert atmosphere

8.2: 12 h / 20 °C / Inert atmosphere

With aluminum (III) chloride; sodium chlorite; tetrapropylammonium perruthennate; sodium dihydrogen phosphate monohydrate; 2-methyl-but-2-ene; oxalyl dichloride; 18-crown-6 ether; bi(allylnickel bromide); (R)-2,2'-binaphthoyl-benzyl-(S)-[1-(1-naphthylethyl)]aminoylphosphine; potassium tert-butylate; potassium hydride; 4-methylmorpholine N-oxide; sodium tetrakis[(3,5-di-trifluoromethyl)phenyl]borate; N,N-dimethyl-formamide; 9-bora-bicyclo[3.3.1]nonane; In tetrahydrofuran; 1,2-dimethoxyethane; diethyl ether; dichloromethane; water; tert-butyl alcohol; 7.1: Friedel-Crafts acylation / 8.1: Wittig reaction / 8.2: Wittig reaction;

DOI:10.1021/ja3004733

upstream raw materials:

7-bromo-1H-indole

(8S)-8-methyl-1-(toluene-4-sulfonyl)-7,8-dihydro-1H-1-aza-as-indacen-6-one

methyl-triphenylphosphonium iodide

(S)-7-(3-but-1-enyl)-1H-indole

Downstream raw materials:

(8S)-6,8-dimethyl-1-(toluene-4-sulfonyl)-1,8-dihydro-1-aza-as-indacene

(6R,8S)-6,8-dimethyl-1-(toluene-4-sulfonyl)-1,6,7,8-tetrahydro-1-aza-as-indacene

(6R,8S)-6,8-dimethyl-1-(toluene-4-sulfonyl)-1,2,3,6,7,8-hexahydro-1-aza-as-indacene

(6R,8S)-5-iodo-6,8-dimethyl-1-(toluene-4-sulfonyl)-1,2,3,6,7,8-hexahydro-1-aza-as-indacene