ethyl 6-(N-(4-bromo-3-fluorobenzyl)methylsulfonamido)-2-(4-chlorophenyl)-5-cyclopropylpyrazolo[1,5-a]pyridine-3-carboxylate

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Chemical Name:ethyl 6-(N-(4-bromo-3-fluorobenzyl)methylsulfonamido)-2-(4-chlorophenyl)-5-cyclopropylpyrazolo[1,5-a]pyridine-3-carboxylate
CAS No.:1378868-89-3
Molecular Formula:C₂₇H₂₄BrClFN₃O₄S
Molecular Weight:620.927
Hs Code.:

Synonyms:ethyl 6-(N-(4-bromo-3-fluorobenzyl)methylsulfonamido)-2-(4-chlorophenyl)-5-cyclopropylpyrazolo[1,5-a]pyridine-3-carboxylate

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Chemical Property of ethyl 6-(N-(4-bromo-3-fluorobenzyl)methylsulfonamido)-2-(4-chlorophenyl)-5-cyclopropylpyrazolo[1,5-a]pyridine-3-carboxylate

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Technology Process of ethyl 6-(N-(4-bromo-3-fluorobenzyl)methylsulfonamido)-2-(4-chlorophenyl)-5-cyclopropylpyrazolo[1,5-a]pyridine-3-carboxylate

There total 4 articles about ethyl 6-(N-(4-bromo-3-fluorobenzyl)methylsulfonamido)-2-(4-chlorophenyl)-5-cyclopropylpyrazolo[1,5-a]pyridine-3-carboxylate 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: 51.0%

: 20026-96-4
ethyl 3-(4-chlorophenyl)propiolate

: 1378868-52-0
1-amino-3-(N-(4-bromo-3-fluorobenzyl)methylsulfonamido)-4-cyclopropylpyridinium 2,4,6-trimethylbenzenesulfonate

: 1378868-89-3
ethyl 6-(N-(4-bromo-3-fluorobenzyl)methylsulfonamido)-2-(4-chlorophenyl)-5-cyclopropylpyrazolo[1,5-a]pyridine-3-carboxylate

Guidance literature:: With potassium carbonate; In N,N-dimethyl-formamide; at 80 ℃; for 3h; Inert atmosphere;

Reference yield:

: 74-11-3
para-chlorobenzoic acid

: 1378868-89-3
ethyl 6-(N-(4-bromo-3-fluorobenzyl)methylsulfonamido)-2-(4-chlorophenyl)-5-cyclopropylpyrazolo[1,5-a]pyridine-3-carboxylate

Guidance literature:: Multi-step reaction with 4 steps

1.1: oxalyl dichloride / N,N-dimethyl-formamide / dichloromethane / 2 h / Reflux

2.1: triethylamine; magnesium chloride / acetonitrile / 3 h / Cooling with ice-salt bath

2.2: 20 °C / Cooling with ice-salt bath

2.3: 1.5 h / Cooling with ice

3.1: trifluoromethylsulfonic anhydride; triethylamine; Triphenylphosphine oxide / 1,2-dichloro-ethane / 1.5 h / 85 °C / Inert atmosphere

4.1: potassium carbonate / N,N-dimethyl-formamide / 3 h / 80 °C / Inert atmosphere

With oxalyl dichloride; trifluoromethylsulfonic anhydride; potassium carbonate; triethylamine; Triphenylphosphine oxide; magnesium chloride; N,N-dimethyl-formamide; In dichloromethane; 1,2-dichloro-ethane; N,N-dimethyl-formamide; acetonitrile;

Reference yield:

: 122-01-0
4-chloro-benzoyl chloride

: 1378868-89-3
ethyl 6-(N-(4-bromo-3-fluorobenzyl)methylsulfonamido)-2-(4-chlorophenyl)-5-cyclopropylpyrazolo[1,5-a]pyridine-3-carboxylate

Guidance literature:: Multi-step reaction with 3 steps

1.1: triethylamine; magnesium chloride / acetonitrile / 3 h / Cooling with ice-salt bath

1.2: 20 °C / Cooling with ice-salt bath

1.3: 1.5 h / Cooling with ice

2.1: trifluoromethylsulfonic anhydride; triethylamine; Triphenylphosphine oxide / 1,2-dichloro-ethane / 1.5 h / 85 °C / Inert atmosphere

3.1: potassium carbonate / N,N-dimethyl-formamide / 3 h / 80 °C / Inert atmosphere

With trifluoromethylsulfonic anhydride; potassium carbonate; triethylamine; Triphenylphosphine oxide; magnesium chloride; In 1,2-dichloro-ethane; N,N-dimethyl-formamide; acetonitrile;