Potassium Carbonate → HCID 89802488, compound

HRID 870687Notes

Reaction equation

HRID 870687 reaction equation
Br[C:2]1[N:6]2[N:7]=[C:8]([NH:11][CH2:12][CH2:13][C:14]([O:16][CH3:17])=[O:15])[CH:9]=[CH:10][C:5]2=[N:4][CH:3]=1.[C:18]([C:21]1[S:25][C:24](B(O)O)=[CH:23][CH:22]=1)(=[O:20])[CH3:19].C([O-])([O-])=O.[K+].[K+]>C(N(CC)CC)C>[CH3:17][O:16][C:14](=[O:15])[CH2:13][CH2:12][NH:11][C:8]1[CH:9]=[CH:10][C:5]2[N:6]([C:2]([C:24]3[S:25][C:21]([C:18](=[O:20])[CH3:19])=[CH:22][CH:23]=3)=[CH:3][N:4]=2)[N:7]=1

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 4143377(5-Acetylthiophen-2-yl)boronic acidHCID 89802256HCID 89802256, compound

Product 1

HCID 89802488HCID 89802488, compoundYield 79%

Reagents, catalysts & solvents 1

HCID 8471TriethylamineSolvent

Procedure

The methyl 3-((3-bromoimidazo[1,2-b]pyridazin-6-yl)amino)propanoate was then subjected to Suzuki coupling reaction with (5-acetyl-thiophen-2-yl)boronic acid as described in example 5.6.19. However for this reaction, triethylamine was used as the base in place of the regular base (K2CO3). The desired product was obtained in 79% yield. 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 2.62-2.65 (m, 3H) 2.88 (t, J=5.94 Hz, 2H) 3.77 (s, 3H) 3.88 (t, J=5.68 Hz, 2H) 7.06 (d, J=9.85 Hz, 1H) 7.70 (d, J=4.04 Hz, 1H) 7.77 (d, J=4.04 Hz, 1H) 8.15 (s, 1H) 8.33 (d, J=9.85 Hz, 1H); LRMS (ESI) m/e 345.0 [(M+H)+, calcd for C16H16N4O3S 344.0].

Sources & evidence

ORD record
ord-eaa45d7c0fd54d57bc44947cb51bd5c0
Source dataset
uspto-grants-2015_03
Patent number
US08969565B2

Reaction notes

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