5-Bromoimidazo(1,2-a)pyridine → HCID 49833295, compound

HRID 1923299Notes

Reaction equation

HRID 1923299 reaction equation
[CH3:1][N:2]([CH3:38])[CH:3]1[CH2:8][CH2:7][N:6]([CH2:9][C:10]2[S:18][C:17]3[C:16]([N:19]4[CH2:24][CH2:23][O:22][CH2:21][CH2:20]4)=[N:15][C:14]([Sn](CCCC)(CCCC)CCCC)=[N:13][C:12]=3[CH:11]=2)[CH2:5][CH2:4]1.Br[C:40]1[N:45]2[CH:46]=[CH:47][N:48]=[C:44]2[CH:43]=[CH:42][CH:41]=1>C1COCC1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.[Cu]I>[N:48]1[CH:47]=[CH:46][N:45]2[C:40]([C:14]3[N:15]=[C:16]([N:19]4[CH2:24][CH2:23][O:22][CH2:21][CH2:20]4)[C:17]4[S:18][C:10]([CH2:9][N:6]5[CH2:5][CH2:4][CH:3]([N:2]([CH3:38])[CH3:1])[CH2:8][CH2:7]5)=[CH:11][C:12]=4[N:13]=3)=[CH:41][CH:42]=[CH:43][C:44]=12

Participants

6

Reactant 2

HCID 130372415-Bromoimidazo(1,2-a)pyridineHCID 59605498Dimethyl-[1-(4-morpholin-4-yl-2-(tributylstannanyl)thieno[3,2-d]pyrimidin-6-ylmethyl)piperidin-4-yl]amine

Product 1

HCID 49833295HCID 49833295, compoundYield 63%

Reagents, catalysts & solvents 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418397HCID 178418397, compoundCatalystHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
140 °C

Procedure

A mixture of dimethyl-[1-(4-morpholin-4-yl-2-(tributylstannanyl)thieno[3,2-d]pyrimidin-6-ylmethyl)piperidin-4-yl]amine (156 mg, 0.24 mmol), 5-bromoimidazo[1,2-a]pyridine (56 mg, 0.29 mmol), Pd(PPh3)4 (28 mg, 0.02 mmol) and copper(I) iodide (55 mg, 0.29 mmol) in THF (2 5 mL) was purged with argon gas then heated at 140° C., for 20 min, in a microwave reactor. The reaction mixture was loaded onto an Isolute® SCX-2 cartridge (5 g), washed with MeOH then eluted with 2 M NH3 in MeOH. The resulting residue was purified by flash chromatography (Si—PPC, MeOH:DCM, gradient 0:100 to 10:90) to give 688 as a white solid (72 mg, 63%). LCMS (Method F): RT 3.89 min; [M+H]+ 478. 1H NMR (400 MHz, CHCl3-d): δ 9.23 (s, 1 H); 7.95 (dd, J=8.6, 1.3 Hz, 1 H); 7.77 (d, J=8.6 Hz, 1 H); 7.75 (d, J=1.3 Hz, 1 H); 7.35 (s, 1 H); 7.32-7.29 (m, 1 H); 4.07 (t, J=4.8 Hz, 4 H); 3.91 (t, J=4.8 Hz, 4 H); 3.84 (s, 2 H); 3.04 (d, J=11.25 Hz, 2 H); 2.33-2.25 (m, 6 H); 2.21-2.10 (m, 3 H); 1.84 (d, J=12.5 Hz, 2 H); 1.61 (m, 2 H)

Workup

  1. customwas purged with argon gas
  2. washwashed with MeOH
  3. washthen eluted with 2 M NH3 in MeOH
  4. customThe resulting residue was purified by flash chromatography (Si—PPC, MeOH:DCM, gradient 0:100 to 10:90)

Sources & evidence

ORD record
ord-8ce4a866d7134f79b16e523618ce9d86
Source dataset
uspto-grants-2012_05
Patent number
US08173650B2

Reaction notes

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