反应详情

This example illustrates a synthesis of 1-(12,13-Oxidotridecyl)-3,7-dimethylxanthine (inventive compound no. 2562). To a suspension of magnesium (4.12 g, 172 mmol) and a crystal of iodine in tetrahydrofuran (40 mL) was added 10-undecenyl bromide (8.00 g, 34.3 mmol) in tetrahydrofuran (30 mL) over 30 minutes and the reaction stirred for a further 30 minutes after the addition was complete. The solution was added via a canula over 5 minutes to a solution of ethylene oxide (2.65 g, 60.0 mmol) in tetrahydrofuran (30 mL) and stirred at 25° C. for 16 hours. Saturated ammonium chloride (100 mL) and 1M hydrogen chloride (200 mL) were added and extracted with diethyl ether (2×200 mL). The combined organic extracts were dried (magnesium sulfate) and evaporated to give a residue which was distilled at 1.5 mm Hg to afford 12-tridecenyl alcohol as a clear liquid (4.11 g, 61%, b.p. 98°-101° C.).

1. additionafter the addition
2. stirringstirred at 25° C. for 16 hours
3. extractionextracted with diethyl ether (2×200 mL)
4. dry with materialThe combined organic extracts were dried (magnesium sulfate)
5. customevaporated
6. customto give a residue which
7. distillationwas distilled at 1.5 mm Hg