6-difluoromethoxy-2-(3-fluoro-phenyl)-3-(4-methanesulfonyl-phenyl)-pyrazolo[1,5-b]pyridazine

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Chemical Name:6-difluoromethoxy-2-(3-fluoro-phenyl)-3-(4-methanesulfonyl-phenyl)-pyrazolo[1,5-b]pyridazine
CAS No.:221148-50-1
Molecular Formula:C₂₀H₁₄F₃N₃O₃S
Molecular Weight:433.411
Hs Code.:

Synonyms:6-difluoromethoxy-2-(3-fluoro-phenyl)-3-(4-methanesulfonyl-phenyl)-pyrazolo[1,5-b]pyridazine

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Chemical Property of 6-difluoromethoxy-2-(3-fluoro-phenyl)-3-(4-methanesulfonyl-phenyl)-pyrazolo[1,5-b]pyridazine

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Technology Process of 6-difluoromethoxy-2-(3-fluoro-phenyl)-3-(4-methanesulfonyl-phenyl)-pyrazolo[1,5-b]pyridazine

There total 10 articles about 6-difluoromethoxy-2-(3-fluoro-phenyl)-3-(4-methanesulfonyl-phenyl)-pyrazolo[1,5-b]pyridazine 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: 37.0%

: 221148-43-2
3-bromo-6-difluoromethoxy-2-(3-fluoro-phenyl)-pyrazolo[1,5-b]pyridazine

: 149104-88-1
4-methanesulphonylphenylboronic acid

: 221148-50-1
6-difluoromethoxy-2-(3-fluoro-phenyl)-3-(4-methanesulfonyl-phenyl)-pyrazolo[1,5-b]pyridazine

Guidance literature:: With sodium carbonate; tetrakis(triphenylphosphine) palladium⁽⁰⁾; In N,N-dimethyl-formamide; for 18h; Heating / reflux;

Reference yield: 37.0%

: 221148-50-1
6-difluoromethoxy-2-(3-fluoro-phenyl)-3-(4-methanesulfonyl-phenyl)-pyrazolo[1,5-b]pyridazine

Guidance literature:

Reference yield:

: 221148-38-5
methyl 3-(3-fluorophenyl)prop-2-ynoate

: 221148-50-1
6-difluoromethoxy-2-(3-fluoro-phenyl)-3-(4-methanesulfonyl-phenyl)-pyrazolo[1,5-b]pyridazine

Guidance literature:: Multi-step reaction with 7 steps

1.1: 1,8-diazabicyclo[5.4.0]undec-7-ene / acetonitrile / 19 h / 0 - 20 °C

2.1: sodium hydroxide; water / ethanol / 3 h / Heating / reflux

2.2: 1 h / 20 °C

3.1: N-Bromosuccinimide / N,N-dimethyl-formamide / 3 h / 20 °C

4.1: pyridine hydrochloride / 3 h / 200 °C

5.1: sodium hydride / N,N-dimethyl-formamide / 0.33 h / 20 °C

5.2: 36 h / -30 - 20 °C

6.1: N-Bromosuccinimide; sodium hydrogencarbonate / N,N-dimethyl-formamide / 18 h

7.1: sodium carbonate / tetrakis(triphenylphosphine) palladium⁽⁰⁾ / N,N-dimethyl-formamide / 18 h / Heating / reflux

With sodium hydroxide; N-Bromosuccinimide; water; pyridine hydrochloride; sodium hydride; sodium hydrogencarbonate; sodium carbonate; 1,8-diazabicyclo[5.4.0]undec-7-ene; tetrakis(triphenylphosphine) palladium⁽⁰⁾; In ethanol; N,N-dimethyl-formamide; acetonitrile;