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邻苯二胺和芳醛于乙腈中加30%H_2O_2和37%盐酸,室温反应30~90min。23例收率92%~99%。
O-phenylenediamine and aromatic aldehyde in acetonitrile plus 30% H_2O_2 and 37% hydrochloric acid, reaction at room temperature for 30 ~ 90min. 23 cases of 92% to 99% yield.