反应详情

1.5 g of 2,2-bis{4-[2-hydroxy-3-(7,7,9,9-tetramethyl-1,4-dioxa-8-azaspiro[4.5]dec-8-yl)propoxy]cyclohexyl}propane and 1.2 g of 2-benzoylthiobenzthiazole were refluxed in 30 ml of anhydrous benzene for 4.5 hours. After completion of the reaction, the reaction mixture was treated with an aqueous alkali and then extracted with benzene, giving crystals. The crystals were purified by column chromatography through silica gel eluted with a 4:1 by volume mixture of diethyl ether and ethyl acetate. The desired Compound No. 222 was obtained in the form of a white powder melting at 77°-79° C.

1. customAfter completion of the reaction
2. additionthe reaction mixture was treated with an aqueous alkali and
3. extractionthen extracted with benzene
4. customgiving crystals
5. customThe crystals were purified by column chromatography through silica gel
6. washeluted with a 4:1 by volume mixture of diethyl ether and ethyl acetate