تفاعل #92163

معادلة التفاعل

6-bromo-5-(bromomethyl)-1-methyl-3-(3-(tetrahydro-2H-pyran-2-yloxy)propyl) thieno[2,3-d]pyrimidine-2,4(1H,3H)-dione

DMSO

→

6-bromo-1-methyl-2,4-dioxo-3-(3-(tetrahydro-2H-pyran-2-yloxy)propyl)-1,2,3,4-tetrahydrothieno[2,3-d]pyrimidine-5-carbaldehyde

المردود 33.8%

المذيبات

EA

water

ظروف التفاعل

المعالجة

1. 1
   درجة الحرارةcooled to RT
2. 2
   تجفيفThe organic layer was dried over Na2SO4
3. 3
   تركيزconcentrated to a residue which
4. 4
   أخرىwas purified by chromatography
5. 5
   غسيلeluted with PE/EA (5:1)

الإجراء التجريبي

To a solution of 6-bromo-5-(bromomethyl)-1-methyl-3-(3-(tetrahydro-2H-pyran-2-yloxy)propyl) thieno[2,3-d]pyrimidine-2,4(1H,3H)-dione (1.7 g, 3.43 mmol) in DMSO (20 mL) was added IBX (1.92 g, 6.85 mmol). The reaction was heated at 50° C. for 2 h, cooled to RT then diluted with EA (80 mL) and water (50 mL). The organic layer was dried over Na2SO4 and concentrated to a residue which was purified by chromatography eluted with PE/EA (5:1) to give 6-bromo-1-methyl-2,4-dioxo-3-(3-(tetrahydro-2H-pyran-2-yloxy)propyl)-1,2,3,4-tetrahydrothieno[2,3-d]pyrimidine-5-carbaldehyde (500 mg, 33.8% yield) as a yellow oil. LCMS: MH+ 431 and TR=1.313 min.

المصدر