8-[2-(4-Fluoro-phenyl)-acetyl]-1,4-dioxa-7,8-diaza-spiro[4.4]nonane-7-carboxylic acid benzyl ester

Base Information

• Chemical Name: 8-[2-(4-Fluoro-phenyl)-acetyl]-1,4-dioxa-7,8-diaza-spiro[4.4]nonane-7-carboxylic acid benzyl ester
• CAS No.: 503303-78-4
• Molecular Formula: C₂₁H₂₁FN₂O₅
• Molecular Weight: 400.407
• Mol file: 503303-78-4.mol

Synonyms:8-[2-(4-Fluoro-phenyl)-acetyl]-1,4-dioxa-7,8-diaza-spiro[4.4]nonane-7-carboxylic acid benzyl ester

Chemical Property of 8-[2-(4-Fluoro-phenyl)-acetyl]-1,4-dioxa-7,8-diaza-spiro[4.4]nonane-7-carboxylic acid benzyl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 8-[2-(4-Fluoro-phenyl)-acetyl]-1,4-dioxa-7,8-diaza-spiro[4.4]nonane-7-carboxylic acid benzyl ester

There total 7 articles about 8-[2-(4-Fluoro-phenyl)-acetyl]-1,4-dioxa-7,8-diaza-spiro[4.4]nonane-7-carboxylic acid benzyl 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: 75.0%

ethylene glycol (107-21-1) + 2-[2-(4-fluorophenyl)acetyl]-4-oxo-pyrazolidine-1-carboxylic acid benzyl ester (503072-26-2) → 8-[2-(4-Fluoro-phenyl)-acetyl]-1,4-dioxa-7,8-diaza-spiro[4.4]nonane-7-carboxylic acid benzyl ester (503303-78-4)

Guidance literature:

With toluene-4-sulfonic acid; In toluene; Heating;

DOI:10.1016/j.bmcl.2004.06.001

Reference yield:

N-benzyloxycarbonyl-hydrazine (5331-43-1) → 8-[2-(4-Fluoro-phenyl)-acetyl]-1,4-dioxa-7,8-diaza-spiro[4.4]nonane-7-carboxylic acid benzyl ester (503303-78-4)

Guidance literature:

Multi-step reaction with 6 steps

1.1: 99 percent / Et₃N / CH₂Cl₂

2.1: 96 percent / NaH / dimethylformamide

3.1: 98 percent / SOCl₂ / methanol

4.1: 91 percent / NaOH / CH₂Cl₂; H₂O

5.1: O₃ / CH₂Cl₂

5.2: 78 percent / DMS / CH₂Cl₂

6.1: 75 percent / 4-methylbenzenesulfonic acid / toluene / Heating

With sodium hydroxide; thionyl chloride; sodium hydride; toluene-4-sulfonic acid; ozone; triethylamine; In methanol; dichloromethane; water; N,N-dimethyl-formamide; toluene;

DOI:10.1016/j.bmcl.2004.06.001

Reference yield:

1-tert-butoxycarbonyl-2-carbobenzyloxyhydrazine (57699-88-4) → 8-[2-(4-Fluoro-phenyl)-acetyl]-1,4-dioxa-7,8-diaza-spiro[4.4]nonane-7-carboxylic acid benzyl ester (503303-78-4)

Guidance literature:

Multi-step reaction with 5 steps

1.1: 96 percent / NaH / dimethylformamide

2.1: 98 percent / SOCl₂ / methanol

3.1: 91 percent / NaOH / CH₂Cl₂; H₂O

4.1: O₃ / CH₂Cl₂

4.2: 78 percent / DMS / CH₂Cl₂

5.1: 75 percent / 4-methylbenzenesulfonic acid / toluene / Heating

With sodium hydroxide; thionyl chloride; sodium hydride; toluene-4-sulfonic acid; ozone; In methanol; dichloromethane; water; N,N-dimethyl-formamide; toluene;

DOI:10.1016/j.bmcl.2004.06.001

upstream raw materials:

ethylene glycol

2-[2-(4-fluorophenyl)acetyl]-4-oxo-pyrazolidine-1-carboxylic acid benzyl ester

N-benzyloxycarbonyl-hydrazine

1-tert-butoxycarbonyl-2-carbobenzyloxyhydrazine

Downstream raw materials:

2-(4-fluoro-phenyl)-1-[8-(2-methylsulfanyl-pyrimidine-4-carbonyl)-1,4-dioxa-7,8-diaza-spiro[4.4]non-7-yl]-ethanone

spiro[1,3-dioxolane[2',6]-2-(4-fluorophenyl)-3-(2-methylsulfanyl-pyrimidin-4-yl)-6,7-dihydro-5H-pyrazolo[1,2-a]pyrazol-1-one]

C₁₉H₁₇FN₄O₅S