反应详情

Lithium aluminium hydride (280 mg, 7.3 mmol) was suspended in dry, redistilled THF (20 ml) under argon and treated dropwise with a solution (THF, 20 ml), of ethyl 2,3-dihydroimidazo[2,1-b]thiazole-6-carboxylate (1.32 g, 6.7 mmol). After 2 h, water was added carefully until effervescence ceased when the mixture was filtered through Celite, the filter pad washed with THF and water and the filtrate and washings combined and evaporated to dryness under reduced pressure. The residue was evaporated twice from ethanol to give the title compound as a white solid (1.03 g, 100%); dH (250 MHz; CD3OD) 3.73-3.95 (2H, m), 4.06-4.30 (2H, m), 4.42 (2H, s), 7.04 (1H, s).

1. customin dry
2. distillationredistilled THF (20 ml) under argon
3. filtrationwas filtered through Celite
4. washthe filter pad washed with THF and water
5. customevaporated to dryness under reduced pressure
6. customThe residue was evaporated twice from ethanol