1) citraconic anhydride
柠康酸酐
1.
Using citraconic anhydride and hydrazin dihydrochloride as base materials,through three steps 3,6-dichloro-4-pyridazinecarboxylic acid was synthesized.
以柠康酸酐和盐酸联氨为起始原料,经过三步反应制得3,6-二氯哒嗪-4-羧酸。
2.
The synthesis of 3-chloro-5-methylpyridazine,an important intermediate of pesticides and anti-viral drugs,was realized and manufactured from citraconic anhydride via four steps,including chlorination reaction,substitution reaction,and oxidation reaction.
以柠康酸酐(2-甲基顺丁烯二酸酐)和水合肼作为起始原料,反应后再通过氯代反应、与水合肼反应、脱肼基共4步反应,合成了目标化合物,并经IR、1HNMR等对其结构进行了表征。
2) 2-methylmaleic anhydride
柠康酐
3) citric acid anhydride
柠檬酸酐
1.
Structure of citric acid anhydride was proved to be five-number cyclo-anhydride by IR spectrum and its molecular .
以柠檬酸和乙酸酐为原料,乙酸为溶剂合成柠檬酸酐。
2.
The citrate monoesters, which were synthesized by citric acid anhydride and fatty alcohols of different carbon chain were carried out in this paper.
本文以柠檬酸和乙酸酐为原料合成柠檬酸酐,再用柠檬酸酐与脂肪醇反应制备柠檬酸酯。
4) citric anhydride
柠檬酸酐
1.
The optimum conditions for preparing the intermediate citric anhydride were that molar ratio of citric acid to acetic anhydride was 2.
以乙酸酐、柠檬酸为原料 ,合成柠檬酸酐中间体 ,n(柠檬酸 )∶n(乙酸酐 ) =2 0∶1 0 ,温度36～ 37℃下 ,反应时间 18h ,收率为 71 0 % ;酯化反应 ,n(柠檬酸酐 )∶n(月桂醇 ) =1 0∶1 1,温度 85～ 90℃ ,反应时间 2 0h ,单酯的收率为 83%～ 84 %。
2.
The intermediate citric anhydride which was a water base cutting fluid of anti-rust and lubricant additive was synthesized by citric acid and acetic anhydride.
以柠檬酸、乙酸酐、乙酸为原料合成一种水基切削液防锈润滑添加剂的中间体—柠檬酸酐。
5) citraconic acid
柠康酸
6) Itaconic Anhydride
衣康酸酐
1.
A Theoretical Study on Structure and Properties of Itaconic Anhydride;
衣康酸酐的结构和性质的理论研究
2.
By using cadmium acetate as catalyst, polyitaconic anhydride was prepared through ring opening polymerization of itaconic anhydride.
以衣康酸为原料合成了衣康酸酐,并在乙酸镉的催化作用下通过开环聚合得到了聚衣康酸酐。
3.
A new process of synthesizing itaconic anhydride by catalytically dehydration was studied A kind of catalyst with high activity and high selectivity was obtained The influence of reaction conditions on reaction results was examined Under the optimum conditions, the yield is over 87 5% and the product purity is over 99 3%.
采用催化脱水环化新工艺 ,进行了衣康酸酐合成反应过程的研究。
补充资料：柠康酸
分子式：
CAS号：
性质：又称甲基顺丁烯二酸（cis-methylbutenedioic acid）。从乙醚-石油醚中得单斜针状晶体。有特殊气味。具强吸湿性。熔点91℃（分解）。密度1.62g/cm3。燃烧热（Cp）2.001×103kJ，CR2.017×103kJ。溶于水、乙醇和乙醚，微溶于氯仿，不溶于苯、二硫化碳和石油醚。随水蒸气挥发并成酐（熔点8℃，沸点213℃）。25℃时K13.8×10-3，K20.24×10-6。本品在180℃加热，与硝酸或氢氧化钾作用得中康酸；与钠汞剂作用得甲基丁二酸。由蒸馏柠檬酸而得。用于有机合成，合成聚酯。
CAS号：
性质：又称甲基顺丁烯二酸（cis-methylbutenedioic acid）。从乙醚-石油醚中得单斜针状晶体。有特殊气味。具强吸湿性。熔点91℃（分解）。密度1.62g/cm3。燃烧热（Cp）2.001×103kJ，CR2.017×103kJ。溶于水、乙醇和乙醚，微溶于氯仿，不溶于苯、二硫化碳和石油醚。随水蒸气挥发并成酐（熔点8℃，沸点213℃）。25℃时K13.8×10-3，K20.24×10-6。本品在180℃加热，与硝酸或氢氧化钾作用得中康酸；与钠汞剂作用得甲基丁二酸。由蒸馏柠檬酸而得。用于有机合成，合成聚酯。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条