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5-氯-2-氨基三氟甲苯工藝方案 1、側(cè)鏈氯化：甲苯在催化劑存在下，通入氯氣得三氯甲苯。 2、氟化：三氯甲苯在氟化氫和催化劑存在下，升溫反應得三氟甲苯粗產(chǎn)品，常壓精餾得三氟甲苯。 3、環(huán)氯化：三氟甲苯在催化劑的存在下，通入氯氣得間氯三氟甲苯粗產(chǎn)品，減壓精餾得間氯三氟甲苯。 4、硝化：間氯三氟甲苯在硫酸與硝酸的存在下，常溫反應得5-氯-2-硝基三氟甲苯粗產(chǎn)品，減壓精餾得成品。 5、還原：5-氯-2-硝基三氟甲苯在甲醇和催化劑的存在下，通入氫氣的粗產(chǎn)品，回收甲醇后，減壓精餾得產(chǎn)品。 |
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武漢一心一譯 
捐助貴賓 (著名寫手)
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商家已經(jīng)主動聲明此回帖可能含有宣傳內(nèi)容
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Assisson: 金幣+20, 翻譯EPI+1, ★★★很有幫助 2015-07-28 10:15:32
Assisson: 金幣+20, 翻譯EPI+1, ★★★很有幫助 2015-07-28 10:15:32
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5-氯-2-氨基三氟甲苯工藝方案 Technological Process for 2-Amino-5-chlorobenzotrifluoride 1、側(cè)鏈氯化：甲苯在催化劑存在下，通入氯氣得三氯甲苯。 1,side chain chlorination: With the presence of methylbenzene as catalyst, the trichlorotoluene can be obtained by ventilating chlorine gas 2、氟化：三氯甲苯在 氟化氫和催化劑存在下，升溫反應得三氟甲苯粗產(chǎn)品，常壓精餾得三氟甲苯。 2, Fluorinatio: Under the effect of hydrogen fluoride and catalyst, trichlorotoluene can be reacted into crude trifluorotoluene by increasing reaction temperaturem and then become the refined trifluorotoluene through normal pressure rectification. 3、環(huán)氯化：三氟甲苯在 催化劑的存在下，通入氯氣 得 間氯三氟甲苯粗產(chǎn)品，減壓精餾 得間氯三氟甲苯。 3, Cyclizing chlorination: With the presence of catalyst, the trifluorotoluene can be firstly reacted into crude chlorobenzotrifluoride and then become the refined the product by vacuum distillation 4、硝化：間氯三氟甲苯 在硫酸與硝酸的存在下，常溫反應得 5-氯-2-硝基三氟甲苯 粗產(chǎn)品，減壓精餾得成品。 4, nitration: With the presence of sulfuric acid and nitric acid, the chlorobenzotrifluoride will be first reacted into crude 5-chloro-2-nitrobenzotrifluoride under normal temperature, and then become the refined product through vacuum distillation. 5、還原：5-氯-2-硝基三氟甲苯 在 甲醇和催化劑的存在下，通入氫氣的粗產(chǎn)品，回收甲醇后，減壓精餾得產(chǎn)品。 5, Reduction reaction: With the presence of methyl alcohol and catalyst, by ventilating hydrogen, firstly the crude 5-chloro-2-nitrobenzotrifluoride can be prepared, then the refined product can be obtained by recycling the waste methyl alcohol within and vacuum distillation. |
2樓2015-07-26 20:57:15
hitoli
木蟲 (正式寫手)
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Assisson: 金幣+10, ★★★很有幫助 2015-07-28 10:15:51
Assisson: 金幣+10, ★★★很有幫助 2015-07-28 10:15:51
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Technology program for 5-chloro-2-aminotrifluorotoluene 1. chlorizatoin of side-chain: trichlorotoluene is obtained through toluene reacting with chlorine in the presence of catalyst. 2. fluorization: trichlorotoluenen, in the presence of hydrogen fluoride and catalysts, was heated to obtain rude trifluorotoluene, which was distilled to trifluorotoluene under atomosphere. 3. ring chlorination: trifluorotoluene reacted with chlorine in the presence of catalysts to obtain crude meso-chlorotrifluorotoluene, which was distilled to meso-chlorotrifluorotoluene under reduced pressure. 4. nitration: meso-chlorotrifluorotoluene reacted in the presence of sulfuric acid and nitric acid under room temperature to get raw 5-chloro-2-nitrotrifluorotoluene, which was distilled to product under reduced pressure. 5. reduction: 5-chloro-2-nitrotrifluorotoluene reacted with hydrogen in the presence of methanol and catalysts to get raw product, which was distilled to product under reduced pressure after recycle of methanol. |
3樓2015-07-26 21:07:42
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