Dimethylformamide → 2-Amino-5-mesityl-3,7-dimethyl-3,7-dihydro-4H-pyrrolo[2,3-d]pyrimidin-4-one

To a solution of 2-amino-5-mesityl-7-methyl-3,7-dihydro-4H-pyrrolo[2,3-d]pyrimidin-4-one (847 mg, 3.00 mmol) and N,N-dimethylformamide (30 ml) was added sodium hydride (60% in oil, 120 mg, 3.00 mmol) at 0° C. and stirred for 0.5 hour. After stirring at room temperature for 0.5 hour, to the mixture was added a solution of MeI (426 mg, 3.0 mmol) and N,N-dimethylformamide (5 ml) at 0° C. and stirred for 0.5 hour. After stirring at room temperature for 1 hour, the mixture was diluted with water (20 ml) and extracted with ethyl acetate (50 ml×3). The extracts were combined, washed with brine, dried over sodium sulfate and concentrated in vacuo. The residue was purified by silica gel chromatography eluting with hexane/ethyl acetate (3:1) to give 553 mg (62%) of the title compound.

1. stirringAfter stirring at room temperature for 0.5 hour, to the mixture
2. stirringstirred for 0.5 hour
3. stirringAfter stirring at room temperature for 1 hour
4. extractionextracted with ethyl acetate (50 ml×3)
5. washwashed with brine
6. dry with materialdried over sodium sulfate
7. concentrationconcentrated in vacuo
8. customThe residue was purified by silica gel chromatography
9. washeluting with hexane/ethyl acetate (3:1)

ORDレコード

ord-84f17266cae443a38a64f396e064a766

出典データセット

uspto-grants-2011_03

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US07897607B2