Indazole was synthesized in 71% yield by keeping the diazonation solution for 24 h at room temperature,which was prepared from reducing o-nitrophenylacetic acid with 8%(NH_4)_2S solution upon refluxing for(2 h) and diazotizing with HCl and NaNO_2.
以邻硝基甲苯为原料,在乙醇钠催化下与草酸二乙酯缩合,然后经水解、双氧水氧化、盐酸酸化得到邻硝基苯乙酸,收率62%。
The results showed that under the conditions of the mole ratio of hydrazine hydrate to o-nitrophenylacetic acid is 3∶1,the quantity of c.
以邻硝基甲苯为原料在乙醇钠催化下与草酸二乙酯缩合、水解、双氧水氧化、盐酸酸化得到邻硝基苯乙酸收率为62%。
o-nitrophenylacetic acid was synthesized by C2H5ONa-catalyzed condensation of o-nitrotoluene with diethyl oxalate and subsequently by hydrolysis,oxidation with H2O2 and acidation with HCl.
在乙醇钠催化下使邻硝基甲苯与草酸二乙酯缩合,然后经水解、双氧水氧化和盐酸酸化得到邻硝基苯乙酸,收率62%。
Novel green synthesis of o-nitrobenzoic acid by oxidation of o-nitrotoluene with substituted iron porphyrins;
取代铁卟啉催化氧化邻硝基甲苯绿色合成邻硝基苯甲酸
This paper has reviewed on chemical synthesis of o-nitrobenzaldehyde from various materials including o-nitrotoluene, o-nitrobenzyl alcohols, o-nitrobenzoic acid, benzaldehyde, o-nitrobenzamide, o-nitrobenzyl bromide and so on.
论文从不同的原料(邻硝基甲苯、邻硝基甲苯醇、邻硝基苯甲酸、邻硝基苯甲酰胺、邻硝基苯甲酰氯、苯甲醛、邻硝基苄氯、邻硝基乙苯)出发,对邻硝基苯甲醛的化学合成进行了综述,同时对电化学合成也作了简要介绍。
The process for preparing o-nitrobenzoic acid (ONBA) from o-nitrotoluene (ONT) by liquid-phase oxidation with dioxygen in the presence of biomimetic catalyst cobalt phthalocyanine was investigated.
研究了以钴酞菁为模拟酶催化剂、氧气液相氧化邻硝基甲苯制取邻硝基苯甲酸的最佳工艺条件,考察了温度、氧气压力、溶剂比〔V(甲醇)/V(苯)〕、反应时间、n(NaOH)/n(邻硝基甲苯)等参数对邻硝基苯甲酸收率的影响,发现助催化剂NaOH用量和溶剂体积比影响较大。