CN107963992A - 有水法合成吡唑醚菌酯 - Google Patents
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- 239000005869 Pyraclostrobin Substances 0.000 title claims abstract description 23
- HZRSNVGNWUDEFX-UHFFFAOYSA-N pyraclostrobin Chemical compound COC(=O)N(OC)C1=CC=CC=C1COC1=NN(C=2C=CC(Cl)=CC=2)C=C1 HZRSNVGNWUDEFX-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229920000881 Modified starch Polymers 0.000 title claims abstract description 10
- 239000004368 Modified starch Substances 0.000 title claims abstract description 10
- 235000019426 modified starch Nutrition 0.000 title claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000009413 insulation Methods 0.000 claims abstract description 13
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical class CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 claims abstract description 10
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims abstract description 10
- 239000007787 solid Substances 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 210000003298 dental enamel Anatomy 0.000 claims abstract description 5
- 229910000027 potassium carbonate Inorganic materials 0.000 claims abstract description 5
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000002425 crystallisation Methods 0.000 claims abstract description 3
- 230000008025 crystallization Effects 0.000 claims abstract description 3
- 238000010792 warming Methods 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 abstract description 7
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- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
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- 238000004659 sterilization and disinfection Methods 0.000 description 2
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- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241000233679 Peronosporaceae Species 0.000 description 1
- WTKZEGDFNFYCGP-UHFFFAOYSA-N Pyrazole Chemical compound C=1C=NNC=1 WTKZEGDFNFYCGP-UHFFFAOYSA-N 0.000 description 1
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- 235000021307 Triticum Nutrition 0.000 description 1
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- 230000000844 anti-bacterial effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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- 231100000053 low toxicity Toxicity 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000004702 methyl esters Chemical class 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
- C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
- C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D231/14—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D231/18—One oxygen or sulfur atom
- C07D231/20—One oxygen atom attached in position 3 or 5
- C07D231/22—One oxygen atom attached in position 3 or 5 with aryl radicals attached to ring nitrogen atoms
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Abstract
本发明公开了一种有水法合成吡唑醚菌酯,其方法步骤是:向搪瓷反应釜内酯化后的料液中,投入二氯乙烷4.25~4.38吨,搅拌升温后再投入固体无水碳酸钾450~480公斤,滴加硫酸二甲酯430~480公斤,反应温度控制在47~48℃,保温反应2小时;保温反应完成后,加水1.5吨,升温反应70~71℃,保温1小时,静置1小时,分层后分出上层水;然后在‑0.089~‑0.091MPa的真空下,脱除二氯乙烷后,加入甲醇1.35~1.45吨,搅拌降温至0~5℃,结晶、离心分离,得到固体物即为吡唑醚菌酯。本发明省略了脱水处理工序,减少了反应时间,从而提高了生产效率;避免了脱水耗能,节省了能源,降低了产品成本;无有废水排放,减少了环境污染。
Description
一、技术领域:
本发明属于原药化合物制备领域,具体涉及一种有水法合成吡唑醚菌酯。
二、背景技术:
吡唑醚菌酯是由巴斯夫开发的具有吡唑结构的甲氧基丙烯酸酯类杀菌剂类的优良品种,因其高效低毒,化学性质稳定,杀菌谱广而成为国内外农药企业开发的杀菌品种之一。可广泛用于小麦、花生、水稻果树等各种作物,对白粉病、纹枯病、褐斑病、灰霉病、霜霉病等广范围病害均有较强的防治作用。
在以对氯苯胺和邻硝基甲苯为主要原料制取吡唑醚菌酯的工艺中,由N-羟基-N-2-{(N-对氯苯基)-3-吡唑氧基甲基}苯基氨基甲酸酯到吡唑醚菌酯反应,在以往工艺,N-羟基-N-2-{(N-对氯苯基)-3-吡唑氧基甲基}苯基氨基甲酸酯要进行脱水工序,用二氯乙烷做脱水剂,脱干净后,再进行原药合成到吡唑醚菌酯。工序中进行脱水处理,增加了反应时间,降低了生产效率,浪费了能源,提高了产品成本,加大了废水排放,污染了环境。
三、发明内容:
为了解决现有技术的不足,本发明的目的是提供一种有水法合成吡唑醚菌酯的方法。
实现本发明的目的采用的技术方案是:有水法合成吡唑醚菌酯的方法步骤是:向搪瓷反应釜内酯化后的料液中,投入纯度为99.8%的二氯乙烷4.25~4.38吨,搅拌升温至49~50℃,再投入纯度99.6%的固体无水碳酸钾450~480公斤,滴加纯度99.8%的硫酸二甲酯430~480公斤,反应温度控制在47~48℃,保温反应2小时;保温反应完成后,加水1.5吨,升温反应70~71℃,保温1小时,静置1小时,分层后分出上层水;然后在-0.089~-0.091MPa的真空下,脱除二氯乙烷后,加入甲醇1.35~1.45吨,搅拌降温至0~5℃,结晶、离心分离,得到固体物即为吡唑醚菌酯;得到吡唑醚菌酯含量在98.2%,熔点63.6℃。
本发明的有益效果是:由于本发明采用有水法合成吡唑醚菌酯,工序不必进行脱水处理,省略了一步工序,减少了反应时间,从而提高了生产效率;避免了脱水耗能,节省了能源,降低了产品成本;无有废水排放,减少了环境污染。
四、具体实施方式:
对于吡唑醚菌酯合成,其合成路线有多种,本发明选用的是以对氯苯胺和邻硝基甲苯为主要原料的合成路线,一般工序为:盐酸盐反应,重氮化反应、酸化、萃取、环化、氧化、缩合还原酯化、原药合成等工序。而在最后原药合成前,本发明则无脱水步骤,而是在有水的基础上,先加二氯乙烷再加碳酸钾和硫酸二甲酯,经过升温、保温反应得到吡唑醚菌酯的。
实现本发明有水法合成吡唑醚菌酯的实施例:所用的反应釜为搪瓷釜,体积8m3,酯化料一批色谱分析:N-羟基-N-2-{(N-对氯苯基)-3-吡唑氧基甲基}-苯胺:1.102%;N-羟基-N-2-{(N-对氯苯基)-3-吡唑氧基甲基}苯基氨基甲酸酯:96.859%;杂质(酯类):2.039%。其方法步骤是:向搪瓷反应釜内酯化完的料液中,投入纯度为99.8%的二氯乙烷4.32吨,搅拌升温至49~50℃,再投入纯度99.6%的固体无水碳酸钾475公斤,滴加纯度99.8%的硫酸二甲酯450公斤,反应温度控制在47~48℃,保温反应2小时;保温反应完成后,加水1.5吨,升温反应70~71℃,保温1小时,静置1小时,分层后分出上层水;然后在-0.089~-0.091MPa的真空下,脱除二氯乙烷后,加入甲醇1.425吨,搅拌降温至0~5℃,结晶、离心分离,得到固体物即为吡唑醚菌酯;得到吡唑醚菌酯含量在98.2%,熔点63.6℃。
本发明特点是在以对氯苯胺,邻硝基苯胺最终合成吡唑醚菌酯的工艺中,最后原药合成之前,对酯化的原液不用脱水,而直接在有水的情况下进行原药合成。所以本发明省略了一步工序,减少了反应时间,从而提高了生产效率;避免了脱水耗能,节省了能源,降低了产品成本;无有废水排放,减少了环境污染。
Claims (2)
1.一种有水法合成吡唑醚菌酯,其方法步骤是:向搪瓷反应釜内酯化后的料液中,投入纯度为99.8%的二氯乙烷4.25~4.38吨,搅拌升温至49~50℃,再投入纯度99.6%的固体无水碳酸钾450~480公斤,滴加纯度99.8%的硫酸二甲酯430~480公斤,反应温度控制在47~48℃,保温反应2小时;保温反应完成后,加水1.5吨,升温反应70~71℃,保温1小时,静置1小时,分层后分出上层水;然后在-0.089~-0.091MPa的真空下,脱除二氯乙烷后,加入甲醇1.35~1.45吨,搅拌降温至0~5℃,结晶、离心分离,得到固体物即为吡唑醚菌酯。
2.如权利要求1所述的有水法合成吡唑醚菌酯,其特征在于:所述的吡唑醚菌酯含量在98.2%,熔点63.6℃。
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1154692A (zh) * | 1994-07-06 | 1997-07-16 | 巴斯福股份公司 | 2-[(二氢)吡唑-3'-基氧亚甲基]苯胺的酰胺及其制备方法和用途 |
| CN104592117A (zh) * | 2015-01-13 | 2015-05-06 | 安徽国星生物化学有限公司 | 一种吡唑醚菌酯的合成方法 |
| CN106749025A (zh) * | 2016-11-14 | 2017-05-31 | 四川福思达生物技术开发有限责任公司 | 一种简洁合成吡唑醚菌酯的方法 |
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- 2017-12-23 CN CN201711500447.5A patent/CN107963992A/zh active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1154692A (zh) * | 1994-07-06 | 1997-07-16 | 巴斯福股份公司 | 2-[(二氢)吡唑-3'-基氧亚甲基]苯胺的酰胺及其制备方法和用途 |
| CN104592117A (zh) * | 2015-01-13 | 2015-05-06 | 安徽国星生物化学有限公司 | 一种吡唑醚菌酯的合成方法 |
| CN106749025A (zh) * | 2016-11-14 | 2017-05-31 | 四川福思达生物技术开发有限责任公司 | 一种简洁合成吡唑醚菌酯的方法 |
Non-Patent Citations (1)
| Title |
|---|
| 陶贤鉴,等.: "吡唑醚菌酯的合成研究", 《农药研究与应用》 * |
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