反应详情

温度

23 °C

A solution of 2,2'-dithiobisbenzoyl chloride (2.00 g, 5.83 mmol) in 50 mL of dichloromethane was added to a solution of methyl 3-amino-2-thiophenecarboxylate (1.82 g, 11.6 mmol) in 14 mL of pyridine at 23° C. The reaction mixture was stirred for 18 hours at 23° C. under nitrogen atmosphere. The precipitate formed was collected by filtration, then triturated with 5% aqueous HCl and washed with water to yield the crude product. The crude material was recrystallized first from ethanol, then from acetonitrile-DMF to yield 2.0 g of the title compound, mp 250°-252° C.

1. customThe precipitate formed
2. filtrationwas collected by filtration
3. customtriturated with 5% aqueous HCl
4. washwashed with water
5. customto yield the crude product
6. customThe crude material was recrystallized first from ethanol