(2-Thienylmethyl)amine → HCID 68226586, compound

HRID 1186521Notes

Reaction equation

HRID 1186521 reaction equation
CS([C:5]1[N:10]=[C:9]([C:11]2[N:15]3[CH:16]=[CH:17][N:18]=[C:19]([N:20]4[CH2:25][CH2:24][N:23]([CH3:26])[CH2:22][CH2:21]4)[C:14]3=[N:13][CH:12]=2)[CH:8]=[CH:7][N:6]=1)(=O)=O.[S:27]1[CH:31]=[CH:30][CH:29]=[C:28]1[CH2:32][NH2:33]>>[CH3:26][N:23]1[CH2:24][CH2:25][N:20]([C:19]2[C:14]3[N:15]([C:11]([C:9]4[CH:8]=[CH:7][N:6]=[C:5]([NH:33][CH2:32][C:28]5[S:27][CH:31]=[CH:30][CH:29]=5)[N:10]=4)=[CH:12][N:13]=3)[CH:16]=[CH:17][N:18]=2)[CH2:21][CH2:22]1

Participants

3

Reactant 2

HCID 34005(2-Thienylmethyl)amineHCID 682264863-(2-Methanesulfonyl-pyrimidin-4-yl)-8-(4-methyl-piperazin-1-yl)-imidazo[1,2-a]pyrazine

Product 1

HCID 68226586HCID 68226586, compound

Conditions

Temperature
140 °C

Procedure

The mixture of 3-(2-methanesulfonyl-pyrimidin-4-yl)-8-(4-methyl-piperazin-1-yl)-imidazo[1,2-a]pyrazine (from Example 46 supra) (150 mg, 0.402 mmol) and thiophen-2-ylmethanamine (182 mg, 1.608 mmol) was heated at 140° C. with stirring for 2 hours. The oil was purified by chromatography (silica gel, 10 g, 200-300 mesh, eluting with dichloromethane:methanol, 30:1 to 10:1) to afford the crude product (115 mg). The crude product was purified by prep-HPLC. Several drops of concentrated HCl were added to the fractions with product. After sonicating for several minutes, solution was concentrated under reduced pressure to afford {4-[8-(4-methyl-piperazin-1-yl)-imidazo [1,2-a]pyrazin-3-yl]-pyrimidin-2-yl}-thiophen-2-ylmethyl-amine; hydrochloride. (Yield 34 mg, 21.2%). 1H NMR (300 MHz, CD3OD): δ 9.02 (brs, 1H), 8.84 (s, 1H), 8.39 (d, 1H, J=6.3 Hz), 7.69-7.63 (m, 2H), 7.40 (brs, 1H), 7.23 (s, 1H), 7.06-7.03 (m, 1H), 5.62-5.51 (m, 2H), 5.06-4.99 (m, 2H), 3.88-3.75 (m, 4H), 3.48-3.37 (m, 2H), 3.00 (s, 3H). LC-MS: [M+H]+ 407.

Workup

  1. customThe oil was purified by chromatography (silica gel, 10 g, 200-300 mesh, eluting with dichloromethane:methanol, 30:1 to 10:1)
  2. customto afford the crude product (115 mg)
  3. customThe crude product was purified by prep-HPLC
  4. additionSeveral drops of concentrated HCl were added to the fractions with product
  5. customAfter sonicating for several minutes
  6. concentrationsolution was concentrated under reduced pressure

Sources & evidence

ORD record
ord-bbdc49f280f1492d923239d026ed842d
Source dataset
uspto-grants-2014_03
Patent number
US08673905B2

Reaction notes

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