(S)-1-benzhydryl-3-(4-methylbenzyl)-2-oxopiperidine-3-carboxylic acid tert-butyl ester

Base Information

• Chemical Name: (S)-1-benzhydryl-3-(4-methylbenzyl)-2-oxopiperidine-3-carboxylic acid tert-butyl ester
• CAS No.: 1354577-68-6
• Molecular Formula: C₃₁H₃₅NO₃
• Molecular Weight: 469.624
• Mol file: 1354577-68-6.mol

Synonyms:(S)-1-benzhydryl-3-(4-methylbenzyl)-2-oxopiperidine-3-carboxylic acid tert-butyl ester

Chemical Property of (S)-1-benzhydryl-3-(4-methylbenzyl)-2-oxopiperidine-3-carboxylic acid tert-butyl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (S)-1-benzhydryl-3-(4-methylbenzyl)-2-oxopiperidine-3-carboxylic acid tert-butyl ester

There total 4 articles about (S)-1-benzhydryl-3-(4-methylbenzyl)-2-oxopiperidine-3-carboxylic acid tert-butyl 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: 84.0%

N(1)-diphenylmethyl-2-piperidone-3-carboxylic acid tert-butyl ester (1354577-57-3) + 4-Methylbenzyl bromide (104-81-4) → (S)-1-benzhydryl-3-(4-methylbenzyl)-2-oxopiperidine-3-carboxylic acid tert-butyl ester (1354577-68-6)

Guidance literature:

With (S,S)-3,3',5,5'-tetrahydro-2,6-bis(3,4,5-trifluorophenyl)-4,4'-spirobi[4H-dinaphth[2,1-c:1',2'-e]azepinium]bromide; potassium hydroxide; In toluene; at -40 ℃; for 24h; optical yield given as %ee; enantioselective reaction;

DOI:10.1002/adsc.201100542

Reference yield:

N(1)-benzhydryl-2-piperidone (1354577-53-9) → (S)-1-benzhydryl-3-(4-methylbenzyl)-2-oxopiperidine-3-carboxylic acid tert-butyl ester (1354577-68-6)

Guidance literature:

Multi-step reaction with 2 steps

1.1: lithium hexamethyldisilazane / tetrahydrofuran / -78 °C

1.2: 4 h / -78 °C

2.1: (S,S)-3,3',5,5'-tetrahydro-2,6-bis(3,4,5-trifluorophenyl)-4,4'-spirobi[4H-dinaphth[2,1-c:1',2'-e]azepinium]bromide; potassium hydroxide / toluene / 24 h / -40 °C

With (S,S)-3,3',5,5'-tetrahydro-2,6-bis(3,4,5-trifluorophenyl)-4,4'-spirobi[4H-dinaphth[2,1-c:1',2'-e]azepinium]bromide; potassium hydroxide; lithium hexamethyldisilazane; In tetrahydrofuran; toluene;

DOI:10.1002/adsc.201100542

Reference yield:

Bromodiphenylmethane (776-74-9) → (S)-1-benzhydryl-3-(4-methylbenzyl)-2-oxopiperidine-3-carboxylic acid tert-butyl ester (1354577-68-6)

Guidance literature:

Multi-step reaction with 3 steps

1.1: tetrabutylammomium bromide; potassium hydroxide / toluene / 24 h / 20 °C

2.1: lithium hexamethyldisilazane / tetrahydrofuran / -78 °C

2.2: 4 h / -78 °C

3.1: (S,S)-3,3',5,5'-tetrahydro-2,6-bis(3,4,5-trifluorophenyl)-4,4'-spirobi[4H-dinaphth[2,1-c:1',2'-e]azepinium]bromide; potassium hydroxide / toluene / 24 h / -40 °C

With (S,S)-3,3',5,5'-tetrahydro-2,6-bis(3,4,5-trifluorophenyl)-4,4'-spirobi[4H-dinaphth[2,1-c:1',2'-e]azepinium]bromide; tetrabutylammomium bromide; potassium hydroxide; lithium hexamethyldisilazane; In tetrahydrofuran; toluene;

DOI:10.1002/adsc.201100542

upstream raw materials:

piperidin-2-one

N⁽¹⁾-diphenylmethyl-2-piperidone-3-carboxylic acid tert-butyl ester

4-Methylbenzyl bromide

N⁽¹⁾-benzhydryl-2-piperidone