Sodium Carbonate → 3-[3-Chloro-5-(4-fluoro-phenyl)-thiophen-2-yl]-8-(1-ethyl-propyl)-2,6-dimethyl-imidazo[1,2-b]pyridazine

HRID 1432628Notes

Reaction equation

HRID 1432628 reaction equation
Br[C:2]1[S:6][C:5]([C:7]2[N:11]3[N:12]=[C:13]([CH3:21])[CH:14]=[C:15]([CH:16]([CH2:19][CH3:20])[CH2:17][CH3:18])[C:10]3=[N:9][C:8]=2[CH3:22])=[C:4]([Cl:23])[CH:3]=1.[F:24][C:25]1[CH:30]=[CH:29][C:28](B(O)O)=[CH:27][CH:26]=1.C([O-])([O-])=O.[Na+].[Na+].C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>CC([O-])=O.CC([O-])=O.[Pd+2].C(O)CC>[Cl:23][C:4]1[CH:3]=[C:2]([C:28]2[CH:29]=[CH:30][C:25]([F:24])=[CH:26][CH:27]=2)[S:6][C:5]=1[C:7]1[N:11]2[N:12]=[C:13]([CH3:21])[CH:14]=[C:15]([CH:16]([CH2:19][CH3:20])[CH2:17][CH3:18])[C:10]2=[N:9][C:8]=1[CH3:22]

Participants

7

Reactant 4

HCID 10340Sodium CarbonateHCID 11776TriphenylphosphineHCID 2856454-Fluorophenylboronic acidHCID 579329223-(5-Bromo-3-chloro-thiophen-2-yl)-8-(1-ethyl-propyl)-2,6-dimethyl-imidazo[1,2-b]pyridazine

Product 1

HCID 579329043-[3-Chloro-5-(4-fluoro-phenyl)-thiophen-2-yl]-8-(1-ethyl-propyl)-2,6-dimethyl-imidazo[1,2-b]pyridazineYield 16%

Reagents, catalysts & solvents 2

HCID 167845palladium(II) acetateCatalystHCID 10311-PropanolSolvent

Procedure

Using a procedure similar to Example 25, 3-(5-bromo-3-chloro-thiophen-2-yl)-8-(1-ethyl-propyl)-2,6-dimethyl-imidazo[1,2-b]pyridazine (0.25 g, 0.61 mmol), 4-fluorophenylboronic acid (0.093 g, 0.67 mmol), 2 M Na2CO3 (0.45 mL, 0.91 mmol), n-PrOH (2 mL), Pd(OAc)2 (0.0068 g, 0.030 mmol) and PPh3 (0.016 g, 0.061 mmol) furnish the title compound (0.041 g, 0.096 mmol, 16%). 1H NMR (CDCl3), δ 0.89 (t, J=7.5 Hz, 6H), 1.76-1.94 (m, 4H), 2.53 (s, 3H), 2.54 (s, 3H), 3.29-3.38 (m, 1H), 6.70 (s, 1H), 7.07-7.13 (m, 2H), 7.22 (s, 1H), 7.54-7.60 (m, 2H). LC/MS (m/z): calcd. for C23H23ClFN3S (M+H)+: 428.2; found: 428.1.

Sources & evidence

ORD record
ord-9f03efc49e644114a1d25a93fce59a8b
Source dataset
uspto-grants-2009_11
Patent number
US07612067B2

Reaction notes

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