Levocetirizine Dihydrochloride was prepared from benzoyl chloride by acidylation,hydrogenation,cyclization with an overall yield of 8.05%.
以苯酰氯为原料,经酰化,还原,环合等反合成左旋西替利嗪盐盐,反率为8.05%。
Levocetirizine Dihydrochloride was prepared from benzoyl chloride by acidylation,hydrogenation,cyclization with an overall yield of 8.05%.
以苯酰氯为原料,经酰化,还原,环合等反合成左旋西替利嗪盐盐,反率为8.05%。
, and the production and application of it were described.At present, the methods of synthesizing N-formylmorpholine are formic acid method, methyl formate method, carboxide acidylation method, etc.
目前N-酰吗啉的要生产方法有法、酯法和羰基合成法等,其中法生产工艺最优,有较好的工业用前景。
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