4-Nitrophenol → 2-Benzyl-5-methoxy-3-p-nitrophenoxy-2H-1,2,4,6-thiatriazine-1,1-dioxide

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Reaction Steps

A solution of 2benzyl-3-chloro-5-methoxy-2H-1,2,4,6-thiatriazine-1,1-dioxide (3.8 g) in methylene chloride (10 ml) is added dropwise to a stirred mixture of p-nitrophenol (1.7 g) and pyridine (2.4 g) in methylene chloride (20 ml). The reaction mixture is heated to reflux for 3 hours, cooled, washed with 3N aq. HCl and sat'd aq. Na2CO3. The methylene chloride layer is dried, filtered and evaporated in vacuo yielding the desired product as an oil.

Provenance & Evidence