反应详情

温度

0 °C

2-Chloro-6a,7,9,10-tetrahydro-[1,4]oxazino[3,4-h]pteridin-6(5H)-one (PREPARATION x1, 1.5 g, 6.23 mmol) was dissolved in DMF (25 mL) to give an orange solution. The mixture was cooled to 0° C. and lithium bis(trimethylsilyl)amide (1.04 g, 6.23 mmol), followed by 4-methylsulfonylbenzyl bromide (1.71 g, 6.86 mmol), were added. The reaction mixture was stirred at 0° C. for 1 hour and was subsequently diluted with ethyl acetate and washed with brine (100 mL) to give a suspension. An orange precipitate was collected on a fitted glass funnel and was washed with water (3×20 mL) and dried over night in a stream of nitrogen. The crude solid was triturated with hot ethyl acetate (2×) to give the title compound which was used without further purification (1.78 g, 69.8%). ESI-MS m/z [M+H]+ calc'd for C17H17ClN4O4S, 409.07; found 409.3.

1. customto give an orange solution
2. additionwere added
3. washwashed with brine (100 mL)
4. customto give a suspension
5. customAn orange precipitate was collected on a fitted glass funnel
6. washwas washed with water (3×20 mL)
7. customdried over night in a stream of nitrogen
8. customThe crude solid was triturated with hot ethyl acetate (2×)