反应详情

A mixture of 2 g of 2-tert-butyl-5-chloro-6-nitrobenzothiazole, described in Example 5, 2 g of anhydrous potassium carbonate and 1.5 ml of thiomorpholine in 7 ml of 1-methyl-2-pyrrolidinone is heated in a sealed glass tube at 120° for 12 hours, poured into water, the solid filtered, washed with water and isopropyl alcohol to give 2-tert-butyl-6-nitro-5-[thiomorpholin-4-yl]benzothiazole, melting at 117°-120°.

1. temperatureis heated in a sealed glass tube at 120° for 12 hours
2. filtrationthe solid filtered
3. washwashed with water and isopropyl alcohol