Methylamine → (rac)-4-{6-Methyl-2,5-dioxo-1-[3-(trifluoromethyl)phenyl]-2,3,4,5,6,7-hexahydro-1H-pyrrolo[3,4-d]pyrimidin-4-yl}-3-(methylsulfonyl)benzonitrile

HRID 2064371Notes

Reaction equation

HRID 2064371 reaction equation
Br[CH2:2][C:3]1[N:8]([C:9]2[CH:14]=[CH:13][CH:12]=[C:11]([C:15]([F:18])([F:17])[F:16])[CH:10]=2)[C:7](=[O:19])[NH:6][CH:5]([C:20]2[CH:25]=[CH:24][C:23]([C:26]#[N:27])=[CH:22][C:21]=2[S:28]([CH3:31])(=[O:30])=[O:29])[C:4]=1[C:32]([O:34]CC(Br)CBr)=O.[CH3:40][NH2:41].C1COCC1>>[CH3:40][N:41]1[C:32](=[O:34])[C:4]2[CH:5]([C:20]3[CH:25]=[CH:24][C:23]([C:26]#[N:27])=[CH:22][C:21]=3[S:28]([CH3:31])(=[O:30])=[O:29])[NH:6][C:7](=[O:19])[N:8]([C:9]3[CH:14]=[CH:13][CH:12]=[C:11]([C:15]([F:16])([F:17])[F:18])[CH:10]=3)[C:3]=2[CH2:2]1

Participants

4

Reactant 3

HCID 6329MethylamineHCID 8028TetrahydrofuranHCID 58133856(Rac)-2,3-dibromopropyl 6-(bromomethyl)-4-[4-cyano-2-(methylsulfonyl)phenyl]-2-oxo-1-[3-(trifluoromethyl)phenyl]-1,2,3,4-tetrahydropyrimidine-5-carboxylate

Product 1

HCID 58133825(rac)-4-{6-Methyl-2,5-dioxo-1-[3-(trifluoromethyl)phenyl]-2,3,4,5,6,7-hexahydro-1H-pyrrolo[3,4-d]pyrimidin-4-yl}-3-(methylsulfonyl)benzonitrileYield 67%

Procedure

Under an argon protective gas atmosphere, (rac)-2,3-dibromopropyl 6-(bromomethyl)-4-[4-cyano-2-(methylsulfonyl)phenyl]-2-oxo-1-[3-(trifluoromethyl)phenyl]-1,2,3,4-tetrahydropyrimidine-5-carboxylate (758.2 mg, 1.0 mmol; Example 7A) was mixed with a 1 M solution of methylamine in THF (20 ml, 20.0 mmol, 20 eq.), and the mixture was stirred at RT for 30 min. The reaction mixture was then concentrated under reduced pressure, and the crude product was purified by preparative HPLC (column: Gromsil C-18 10 μm; mobile phase: acetonitrile/water+0.1% TFA 10:90→90:10). This gave the title compound as a colorless solid (328 mg, 67% of theory).

Workup

  1. concentrationThe reaction mixture was then concentrated under reduced pressure
  2. customthe crude product was purified by preparative HPLC (column: Gromsil C-18 10 μm; mobile phase: acetonitrile/water+0.1% TFA 10:90→90:10)

Sources & evidence

ORD record
ord-2f23e44d73714c6aaa13b1b7206b2c7f
Source dataset
uspto-grants-2012_10
Patent number
US08288402B2

Reaction notes

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