(3R,11bS)-3-phenyl-2,3,5,6-tetrahydro-11bH-benzo<4,5>thieno<2,3-c>oxazolo<3,2-a>pyridine

Base Information

• Chemical Name: (3R,11bS)-3-phenyl-2,3,5,6-tetrahydro-11bH-benzo<4,5>thieno<2,3-c>oxazolo<3,2-a>pyridine
• CAS No.: 142605-19-4
• Molecular Formula: C₁₉H₁₇NOS
• Molecular Weight: 307.416

Synonyms:(3R,11bS)-3-phenyl-2,3,5,6-tetrahydro-11bH-benzo<4,5>thieno<2,3-c>oxazolo<3,2-a>pyridine

Chemical Property of (3R,11bS)-3-phenyl-2,3,5,6-tetrahydro-11bH-benzo<4,5>thieno<2,3-c>oxazolo<3,2-a>pyridine

Chemical Property:

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Technology Process of (3R,11bS)-3-phenyl-2,3,5,6-tetrahydro-11bH-benzo<4,5>thieno<2,3-c>oxazolo<3,2-a>pyridine

There total 3 articles about (3R,11bS)-3-phenyl-2,3,5,6-tetrahydro-11bH-benzo<4,5>thieno<2,3-c>oxazolo<3,2-a>pyridine 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:

2-((R)-2-Hydroxy-1-phenyl-ethyl)-3,4-dihydro-benzo[4,5]thieno[2,3-c]pyridin-2-ium; bromide → (3R,11bS)-3-phenyl-2,3,5,6-tetrahydro-11bH-benzo<4,5>thieno<2,3-c>oxazolo<3,2-a>pyridine (142605-19-4)

Guidance literature:

With triethylamine; In dichloromethane; at -78 ℃; Yield given;

DOI:10.1248/cpb.39.3338

Reference yield:

3-(2-bromoethyl)benzothiophene (19985-73-0) → (3R,11bS)-3-phenyl-2,3,5,6-tetrahydro-11bH-benzo<4,5>thieno<2,3-c>oxazolo<3,2-a>pyridine (142605-19-4)

Guidance literature:

Multi-step reaction with 3 steps

1: 1.) BuLi / 1.) hexane, THF, -78 deg C, 45 min, 2.) hexane, THF, -78 deg C, 30 min

2: p-TsOH / diethyl ether; ethanol / 12 h / Ambient temperature

3: Et₃N / CH₂Cl₂ / -78 °C

With n-butyllithium; toluene-4-sulfonic acid; triethylamine; In diethyl ether; ethanol; dichloromethane;

DOI:10.1248/cpb.39.3338

Reference yield:

2-formyl-3-(2-bromoethyl)benzothiophene (142605-10-5) → (3R,11bS)-3-phenyl-2,3,5,6-tetrahydro-11bH-benzo<4,5>thieno<2,3-c>oxazolo<3,2-a>pyridine (142605-19-4)

Guidance literature:

Multi-step reaction with 2 steps

1: p-TsOH / diethyl ether; ethanol / 12 h / Ambient temperature

2: Et₃N / CH₂Cl₂ / -78 °C

With toluene-4-sulfonic acid; triethylamine; In diethyl ether; ethanol; dichloromethane;

DOI:10.1248/cpb.39.3338

upstream raw materials:

3-(2-bromoethyl)benzothiophene

2-formyl-3-(2-bromoethyl)benzothiophene

Downstream raw materials:

(1S,1'R)-2-(2-hydroxy-1-phenylethyl)-1-methyl-1,2,3,4-tetrahydrobenzo<4,5>thieno<2,3-c>pyridine

(1R,1'R)-2-(2-hydroxy-1-phenylethyl)-1-methyl-1,2,3,4-tetrahydrobenzo<4,5>thieno<2,3-c>pyridine

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