1,7-Dimethylxanthine synthesis
- Product Name:1,7-Dimethylxanthine
- CAS Number:611-59-6
- Molecular formula:C7H8N4O2
- Molecular Weight:180.16
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Yield:611-59-6 90%
Reaction Conditions:
with boron tribromide in toluene at 80; for 2 h;Reagent/catalyst;Temperature;Solvent;
Steps:
2; 3; 6; 7; 8; 9; 10
3-Benzyl-1,7-dimethylxanthine (10 g, 37.2 mmol) was suspended in toluene (150 mL).Boron tribromide (18.6 g, 74.4 mmol) was added. The temperature was raised to 80 ° C for 2 hours.TLC showed the reaction was complete. Cool down to 0-10 ° C,Water (150 mL) was added dropwise and stirred for 2 hours.After filtration, it is beaten with ethanol to obtain a white solid.1,7-dimethylxanthine 6.0g,Yield 90%,The purity is 98%.
References:
CN109796453,2019,A Location in patent:Paragraph 0045; 0048; 0049; 0052; 0061; 0064; 0065; 0068
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