Acetylation of 5,6-dihydro-4H-1,2-oxazines with an acetyl bromide/acetic anhydride mixture provides a general and quite simple procedure for the synthesis of N-acetyl-5,6-dihydro-2H-1,2-oxazines.
乙酰溴/
乙酸酐混合物对5,6-二氢-4H-1,2-噁嗪进行乙酰化反应,提供了一种通用且颇为简单的N-乙酰-5,6-二氢-2H-1,2-噁嗪合成方法。