1-(p-tolylsulfonyl)-5,6-dimethoxy-1,2,3,8a-tetrahydrocyclopentisoquinolin-7(8H)-one

Base Information

• Chemical Name: 1-(p-tolylsulfonyl)-5,6-dimethoxy-1,2,3,8a-tetrahydrocyclopentisoquinolin-7(8H)-one
• CAS No.: 105400-86-0
• Molecular Formula: C₂₀H₂₁NO₅S
• Molecular Weight: 387.456
• Mol file: 105400-86-0.mol

Synonyms:1-(p-tolylsulfonyl)-5,6-dimethoxy-1,2,3,8a-tetrahydrocyclopentisoquinolin-7(8H)-one

Chemical Property of 1-(p-tolylsulfonyl)-5,6-dimethoxy-1,2,3,8a-tetrahydrocyclopentisoquinolin-7(8H)-one

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 1-(p-tolylsulfonyl)-5,6-dimethoxy-1,2,3,8a-tetrahydrocyclopentisoquinolin-7(8H)-one

There total 3 articles about 1-(p-tolylsulfonyl)-5,6-dimethoxy-1,2,3,8a-tetrahydrocyclopentisoquinolin-7(8H)-one 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: 94.0%

5,6-dimethoxy-1,2,3,8a-tetrahydrocyclopentisoquinolin-7(8H)-one (5868-19-9) + p-toluenesulfonyl chloride (98-59-9) → 1-(p-tolylsulfonyl)-5,6-dimethoxy-1,2,3,8a-tetrahydrocyclopentisoquinolin-7(8H)-one (105400-86-0)

Guidance literature:

With pyridine; at 25 ℃; for 1h;

DOI:10.1021/jo00380a024

Reference yield:

6,7-dimethoxy-3,4-dihydro-isoquinoline (3382-18-1) → 1-(p-tolylsulfonyl)-5,6-dimethoxy-1,2,3,8a-tetrahydrocyclopentisoquinolin-7(8H)-one (105400-86-0)

Guidance literature:

Multi-step reaction with 3 steps

1: 92 percent / 1 h / Heating

2: 66 percent / polyphosphoric acid / 1 h / Heating

3: 94 percent / pyridine / 1 h / 25 °C

With pyridine; PPA;

DOI:10.1021/jo00380a024

Reference yield:

2‐(6,7‐dimethoxy‐1,2,3,4‐tetrahydroisoquinolin‐1‐yl)acetic acid (68345-67-5) → 1-(p-tolylsulfonyl)-5,6-dimethoxy-1,2,3,8a-tetrahydrocyclopentisoquinolin-7(8H)-one (105400-86-0)

Guidance literature:

Multi-step reaction with 2 steps

1: 66 percent / polyphosphoric acid / 1 h / Heating

2: 94 percent / pyridine / 1 h / 25 °C

With pyridine; PPA;

DOI:10.1021/jo00380a024

upstream raw materials:

5,6-dimethoxy-1,2,3,8a-tetrahydrocyclopentisoquinolin-7(8H)-one

p-toluenesulfonyl chloride

6,7-dimethoxy-3,4-dihydro-isoquinoline

2‐(6,7‐dimethoxy‐1,2,3,4‐tetrahydroisoquinolin‐1‐yl)acetic acid

Downstream raw materials:

1-(p-tolylsulfonyl)-5,6-dimethoxy-1,2,3,8a-tetrahydrocyclopentisoquinolin-7(8H)-one oxime

1-(p-tolylsulfonyl)-5,6-dimethoxy-1,2,3,8a-tetrahydrocyclopentisoquinolin-7(8H)-one O-(p-tolylsulfonyl)oxime