Stannane, tributyl(1-ethoxyethenyl)- → 6-[6-(1-Ethoxy-vinyl)-[1,2,4]triazolo[4,3-b]pyridazin-3-ylmethyl]-5,7-difluoro-quinoline

HRID 456108Notes

Reaction equation

Cl[C:2]1[CH:3]=[CH:4][C:5]2[N:6]([C:8]([CH2:11][C:12]3[C:13]([F:23])=[C:14]4[C:19](=[CH:20][C:21]=3[F:22])[N:18]=[CH:17][CH:16]=[CH:15]4)=[N:9][N:10]=2)[N:7]=1.C([Sn](CCCC)(CCCC)[C:29]([O:31][CH2:32][CH3:33])=[CH2:30])CCC>O1CCOCC1.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[CH2:32]([O:31][C:29]([C:2]1[CH:3]=[CH:4][C:5]2[N:6]([C:8]([CH2:11][C:12]3[C:13]([F:23])=[C:14]4[C:19](=[CH:20][C:21]=3[F:22])[N:18]=[CH:17][CH:16]=[CH:15]4)=[N:9][N:10]=2)[N:7]=1)=[CH2:30])[CH3:33]

Participants

Conditions

Temperature: 82.5 °C

Procedure

A solution of 6-(6-chloro-[1,2,4]triazolo[4,3-b]pyridazin-3-ylmethyl)-5,7-difluoro-quinoline (58 mg, 0.175 mmol) in dioxane (5 mL) was purged with argon for 1 min. Tributyl-(1-ethoxy-vinyl)stannane (0.2 mL, 0.53 mmol) was then added, followed by addition of PdCl2(PPh3)2 (14.4 mg, 0.021 mmol). The reaction mixture was purged with argon for another half min. The reaction mixture was stirred at 80-85° C. for 4 h; LC/MS showed the reaction was complete. The reaction mixture was diluted with EtOAc, and 15 mL of aqueous KF solution was added. The mixture was extracted with EtOAc, dried over anhydrous Na2SO4, concentrated to give the crude title compound, which was used without further purification. LCMS (method A): [MH]+=368, tR=5.39 min.

Workup

customThe reaction mixture was purged with argon for another half min
additionThe reaction mixture was diluted with EtOAc, and 15 mL of aqueous KF solution
additionwas added
extractionThe mixture was extracted with EtOAc
dry with materialdried over anhydrous Na2SO4
concentrationconcentrated

Sources & evidence

ORD record: ord-b0e62d8d969142c5adbfc32f0298a3e7
Source dataset: uspto-grants-2013_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08497368B2

Reaction notes

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