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ÖÁ×ðľ³æ (ÖøÃûдÊÖ)
- ·ÒëEPI: 68
- Ó¦Öú: 135 (¸ßÖÐÉú)
- ¹ó±ö: 1.097
- ½ð±Ò: 14467.1
- É¢½ð: 3921
- ºì»¨: 102
- ɳ·¢: 3
- Ìû×Ó: 2121
- ÔÚÏß: 396.8Сʱ
- ³æºÅ: 1783324
- ×¢²á: 2012-04-27
- ÐÔ±ð: GG
- רҵ: »·¾³¹¤³Ì
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°®ÓëÓêÏÂ: ½ð±Ò+1 2015-05-27 18:50:32
yxj447836164: ½ð±Ò+20, ·ÒëEPI+1 2015-05-28 13:07:16
°®ÓëÓêÏÂ: ½ð±Ò+1 2015-05-27 18:50:32
yxj447836164: ½ð±Ò+20, ·ÒëEPI+1 2015-05-28 13:07:16
| Schiff base and its complexes were widely used in the fields of catalyst, pharmaceuticals and agrochemicals, corrosion inhibitor, new materials development and design, etc. While, ethyl p-aminobenzoate, an important pharmaceutical intermediate, was used as local anesthetics in medicine. |

2Â¥2015-05-27 13:57:22
²Ó²ÓÃÃ
ÖÁ×ðľ³æ (ÖøÃûдÊÖ)
- ·ÒëEPI: 68
- Ó¦Öú: 135 (¸ßÖÐÉú)
- ¹ó±ö: 1.097
- ½ð±Ò: 14467.1
- É¢½ð: 3921
- ºì»¨: 102
- ɳ·¢: 3
- Ìû×Ó: 2121
- ÔÚÏß: 396.8Сʱ
- ³æºÅ: 1783324
- ×¢²á: 2012-04-27
- ÐÔ±ð: GG
- רҵ: »·¾³¹¤³Ì
¡¾´ð°¸¡¿Ó¦Öú»ØÌû
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Firstly, ethyl p-nitrobenzoate was synthesised by esterification under the conditions of refluxing pattern of using p-nitrobenzoic acid and ethyl alcohol as raw material and concentrated sulfuric acid as catalyst. Then, combined with Zn power as reductant and proper acetic acid addition, the obtained ethyl p-nitrobenzoate was used as raw material to prepare ethyl p-aminobenzoate. Finally, furfural ethyl p-aminobenzoate were synthesized by the condensation reactions of ethyl p-aminobenzoate with furfural . For summarizing the optimal technological condition of ethyl aminobenzoate preparation, the optimization condition of esterification was discussed in this paper, and Zn power reduction procedure has optimized at the same time. The condensation conditions were finally compared to accomplish the synthesis of furfural ethyl p-aminobenzoate. The target product was determined by infrared by methods of spectroscopy and physical analysis. |

3Â¥2015-05-27 14:28:20














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