Methylamine → (2-chloro-7-methyl-4-morpholinothieno[3,2-d]pyrimidin-6-yl)-N-methylmethanamine

HRID 41893Notes

Reaction equation

HRID 41893 reaction equation
[Cl:1][C:2]1[N:3]=[C:4]([N:14]2[CH2:19][CH2:18][O:17][CH2:16][CH2:15]2)[C:5]2[S:10][C:9]([CH:11]=O)=[C:8]([CH3:13])[C:6]=2[N:7]=1.C1COCC1.[CH3:25][NH2:26]>C1(C)C=CC=CC=1.O>[Cl:1][C:2]1[N:3]=[C:4]([N:14]2[CH2:19][CH2:18][O:17][CH2:16][CH2:15]2)[C:5]2[S:10][C:9]([CH2:11][NH:26][CH3:25])=[C:8]([CH3:13])[C:6]=2[N:7]=1

Participants

6

Reactant 3

HCID 6329MethylamineHCID 8028TetrahydrofuranHCID 566485822-Chloro-7-methyl-4-morpholinothieno[3,2-d]pyrimidine-6-carbaldehyde

Product 1

HCID 59817854(2-chloro-7-methyl-4-morpholinothieno[3,2-d]pyrimidin-6-yl)-N-methylmethanamineYield 70%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 1140TolueneSolvent

Procedure

2-Chloro-7-methyl-4-morpholinothieno-[3,2-d]pyrimidine-6-carbaldehyde 36 was dissolved in 20 mL toluene and 20 mL THF followed by the addition of 15 mL 40% methylamine in H2O and the reaction was stirred for 24 hours. The reaction mixture was concentrated in vacuo and the residue dissolved in 30 mL methanol and 30 mL THF followed by the addition of NaBH4. The reaction was stirred at room temp for at least 24 hours and product formation was confirmed by LCMS. The solvents were removed in vacuo and the crude product purified by flash chromatography to give 2.53 g (2-chloro-7-methyl-4-morpholinothieno[3,2-d]pyrimidin-6-yl)-N-methylmethanamine 37 (70% yield) MS (Q1) 314 (M)+

Workup

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. dissolutionthe residue dissolved in 30 mL methanol
  3. addition30 mL THF followed by the addition of NaBH4
  4. stirringThe reaction was stirred at room temp for at least 24 hours
  5. customThe solvents were removed in vacuo
  6. customthe crude product purified by flash chromatography

Sources & evidence

ORD record
ord-b94babca2d004a9994318e81596fe47a
Source dataset
uspto-grants-2013_09
Patent number
US08536161B2

Reaction notes

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