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CN114014817A - Synthesis method of mesityl-2-sulfonyl triazole - Google Patents

Synthesis method of mesityl-2-sulfonyl triazole Download PDF

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Publication number
CN114014817A
CN114014817A CN202111625373.4A CN202111625373A CN114014817A CN 114014817 A CN114014817 A CN 114014817A CN 202111625373 A CN202111625373 A CN 202111625373A CN 114014817 A CN114014817 A CN 114014817A
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stirring
mesityl
compound
temperature
reaction
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陈健龙
金璐仪
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Ningxia Changsheng Pharmaceutical Co ltd
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Ningxia Changsheng Pharmaceutical Co ltd
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D249/00Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms
    • C07D249/02Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms not condensed with other rings
    • C07D249/081,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
    • C07D249/101,2,4-Triazoles; Hydrogenated 1,2,4-triazoles 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
    • C07D249/12Oxygen or sulfur atoms

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The invention belongs to the technical field of chemical intermediates, and particularly relates to a synthetic method of mesityl-2-sulfonyl triazole. According to the invention, formamide, thiosemicarbazide and the like are used as starting raw materials, and mesityl-2-sulfonyl triazole is synthesized through three steps.

Description

Synthesis method of mesityl-2-sulfonyl triazole
Technical Field
The invention belongs to the technical field of chemical intermediates, and particularly relates to a synthetic method of mesityl-2-sulfonyl triazole.
Background
Triazole is an organic matter, has a chemical formula of CHN, is widely applied to synthesis of pesticides such as triadimefon, paclobutrazol, uniconazole and diniconazole, is a white needle crystal, is a light yellow or brown needle crystal as an industrial product, and has strong water absorption. The application is a pesticide and a medical intermediate, and is widely applied to the synthesis of pesticides such as triadimefon, paclobutrazol, uniconazole and diniconazole.
Mesityl-2-sulfonyl triazole is a derivative of triazole, no report on a synthesis method of the triazole is found in the prior art, and a method for efficiently synthesizing mesityl-2-sulfonyl triazole is urgently needed at present.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a method for synthesizing mesityl-2-sulfonyl triazole.
The synthesis method of the mesityl-2-sulfonyl triazole comprises the following steps:
(1) adding formamide and thiosemicarbazide into a reactor, stirring, heating to 100 ℃, carrying out heat preservation reaction, cooling to 25-30 ℃, adding methanol, stirring, adding potassium hydroxide, controlling the temperature to 30-35 ℃, carrying out heat preservation stirring reaction to obtain a compound A
Figure DEST_PATH_IMAGE001
(2) Stirring and mixing the hydrochloric acid solution and the sym-tritolylamine at 0-5 ℃, adding the sodium nitrite aqueous solution, keeping the temperature and stirring for reaction, adding the compound A, controlling the temperature to be 30-35 ℃, stirring for reaction, adjusting the pH to 7, separating out solids, carrying out suction filtration and centrifugation to obtain a compound B
Figure 462628DEST_PATH_IMAGE002
(3) Putting water, liquid caustic soda and a compound B into a reactor, controlling the temperature to be 60-65 ℃, dropwise adding a sodium hypochlorite aqueous solution, after dropwise adding, heating to 90-95 ℃, carrying out heat preservation reaction, cooling to 25-30 ℃, adding water and sodium sulfite, stirring for dissolving, controlling the temperature to be 50-55 ℃, carrying out heat preservation reaction, adjusting the pH value, stirring and centrifuging to obtain the mesityl-2-sulfonyl triazole
Figure DEST_PATH_IMAGE003
Preferably, in the step (1), the mass ratio of formamide to thiosemicarbazide to potassium hydroxide is 2: 3-5: 4, and the addition amount of methanol is 6 times of the mass of formamide.
Preferably, the mass ratio of the sym-tritoluidine to the compound A to the sodium nitrite in the step (2) is 5: 20-25: 3.
Preferably, the mass ratio of the compound B, the caustic soda liquid, the sodium sulfite and the sodium hypochlorite in the step (3) is 1: 1-2: 0.5: 5.
According to the invention, formamide, thiosemicarbazide and the like are used as starting raw materials, and mesityl-2-sulfonyl triazole is synthesized through three steps.
Detailed Description
Example 1
A method for synthesizing mesityl-2-sulfuryl triazole comprises the following steps:
(1) adding 200kg of formamide into a cyclization kettle, starting stirring, adding 500kg of thiosemicarbazide, stirring for 30min, starting a reaction kettle jacket, raising the temperature to 100 ℃ by steam, carrying out heat preservation reaction for 4h, starting circulating water after the reaction is qualified, cooling to 25 ℃, adding 1200kg of methanol, starting stirring, adding 400kg of potassium hydroxide in batches, controlling the temperature to be 40 ℃, and stirring to obtain 2412kg of compound A;
(2) adding 700kg of hydrochloric acid into a reaction kettle, adding 500kg of water, starting frozen brine to start cooling, cooling to 3 ℃, then starting adding 500kg of sym-tritoluidine as a raw material, stirring for 0.5h, slowly adding 300kg of sodium nitrite, finishing dripping, keeping the temperature and stirring for reaction for 2h to obtain diazo liquid for later use, checking that metering pumps of a diazo liquid kettle and a sylvite kettle work normally, setting the flow rates of the two pumps, starting to simultaneously start the two metering pumps, adding 2000kg of compound A into a spiral pipeline reaction, controlling the temperature of a material in the reactor to be 30 ℃, adding the material at a discharge end into an acidification kettle, dripping hydrochloric acid into the acidification kettle, adjusting the pH =7, separating out a solid, and performing centrifugal suction filtration to obtain 934kg of compound B;
(3) adding 300kg of water and 100kg of liquid caustic soda into an oxidation kettle, starting stirring, adding 100kg of compound B in batches, stirring and heating to 60 ℃, starting slowly dropwise adding 700kg of sodium hypochlorite aqueous solution, heating to 90 ℃, keeping the temperature and reacting for 6h, cooling to 25 ℃, transferring the material into a crystallization kettle, adding 500kg of water and 50kg of sodium sulfite into a blending kettle, stirring and dissolving, controlling the temperature in the crystallization kettle to be 50 ℃, slowly adding the material liquid in the blending kettle into the crystallization kettle, keeping the temperature and reacting for 1h, dropwise adding hydrochloric acid to adjust the pH to be =4, stirring, centrifuging, and drying to obtain 115kg of mesityl-2-sulfonyl triazole with the purity of 97.8%.
Example 2
A method for synthesizing mesityl-2-sulfuryl triazole comprises the following steps:
(1) adding 200kg of formamide into a cyclization kettle, starting stirring, adding 300kg of thiosemicarbazide, stirring for 30min, starting a reaction kettle jacket, raising the temperature to 100 ℃ by steam, carrying out heat preservation reaction for 4h, starting circulating water after the reaction is qualified, cooling to 25 ℃, adding 1200kg of methanol, starting stirring, adding 400kg of potassium hydroxide in batches, controlling the temperature to be 40 ℃, and stirring to obtain 2503kg of compound A;
(2) adding 700kg of hydrochloric acid into a reaction kettle, adding 500kg of water, starting frozen brine to cool to 3 ℃, then starting adding the raw material of sym-tritoluidine, stirring for 0.5h, slowly adding 300kg of sodium nitrite, finishing dripping, keeping the temperature and stirring for reaction for 2h to obtain diazo liquid for later use, checking that metering pumps of a diazo liquid kettle and a sylvite kettle work normally, setting two pump flow rates, starting to simultaneously start two metering pumps, adding 2500kg of compound B feed liquid into a spiral pipeline reaction, controlling the temperature of the reactor material to be 30 ℃, adding the material at a discharge end into an acidification kettle, dripping hydrochloric acid into the acidification kettle, adjusting the pH =7, precipitating solids, and performing suction filtration to obtain 947kg of compound B;
(3) adding 300kg of water and 200kg of liquid caustic soda into an oxidation kettle, starting stirring, adding 100kg of compound B in batches, stirring and heating to 60 ℃, starting slowly dropwise adding 700kg of sodium hypochlorite aqueous solution, heating to 90 ℃, keeping the temperature and reacting for 6h, cooling to 25 ℃, transferring the material into a crystallization kettle, adding 500kg of water and 50kg of sodium sulfite into a blending kettle, stirring and dissolving, controlling the temperature in the crystallization kettle to be 50 ℃, slowly adding the material liquid in the blending kettle into the crystallization kettle, keeping the temperature and reacting for 1h, dropwise adding hydrochloric acid to adjust the pH to be =4, stirring, centrifuging, and drying to obtain 121kg of mesityl-2-sulfonyl triazole with the purity of 98.3%.

Claims (4)

1. A synthetic method of mesityl-2-sulfuryl triazole is characterized by comprising the following steps:
(1) adding formamide and thiosemicarbazide into a reactor, stirring, heating to 100 ℃, carrying out heat preservation reaction, cooling to 25-30 ℃, adding methanol, stirring, adding potassium hydroxide, controlling the temperature to 30-35 ℃, carrying out heat preservation stirring reaction to obtain a compound A
Figure DEST_PATH_IMAGE002
(2) Stirring and mixing the hydrochloric acid solution and the sym-tritolylamine at 0-5 ℃, adding the sodium nitrite aqueous solution, keeping the temperature and stirring for reaction, adding the compound A, controlling the temperature to be 30-35 ℃, stirring for reaction, adjusting the pH to 7, separating out solids, carrying out suction filtration and centrifugation to obtain a compound B
Figure DEST_PATH_IMAGE004
(3) Putting water, liquid caustic soda and a compound B into a reactor, controlling the temperature to be 60-65 ℃, dropwise adding a sodium hypochlorite aqueous solution, after dropwise adding, heating to 90-95 ℃, carrying out heat preservation reaction, cooling to 25-30 ℃, adding water and sodium sulfite, stirring for dissolving, controlling the temperature to be 50-55 ℃, carrying out heat preservation reaction, adjusting the pH value, stirring and centrifuging to obtain the mesityl-2-sulfonyl triazole
Figure DEST_PATH_IMAGE006
2. The method for synthesizing mesityl-2-sulfonyl triazole as claimed in claim 1, wherein the mass ratio of formamide to thiosemicarbazide to potassium hydroxide in the step (1) is 2:3 to 5:4, and the addition amount of methanol is 6 times of the mass of formamide.
3. The method for synthesizing mesityl-2-sulfonyl triazole as claimed in claim 1, wherein the mass ratio of the mesityl oxide to the compound A to the sodium nitrite in the step (2) is 5:20 to 25: 3.
4. The method for synthesizing mesityl-2-sulfonyl triazole as claimed in claim 1, wherein the mass ratio of the compound B, the caustic soda liquid, the sodium sulfite and the sodium hypochlorite in the step (3) is 1: 1-2: 0.5: 5.
CN202111625373.4A 2021-12-29 2021-12-29 Synthesis method of mesityl-2-sulfonyl triazole Pending CN114014817A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0680651A (en) * 1991-06-06 1994-03-22 Chugai Pharmaceut Co Ltd Production of triazole-based compound
JPH06340638A (en) * 1993-06-01 1994-12-13 Nippon Peroxide Co Ltd Process for producing 3- (phenylsulfonyl) -1,2,4-triazoles
JPH0753529A (en) * 1993-08-10 1995-02-28 Taoka Chem Co Ltd Method for producing sulfone derivative
US20030060494A1 (en) * 2001-05-18 2003-03-27 Nobuyuki Yasuda Pharmaceutical use of N-carbamoylazole derivatives
CN111690033A (en) * 2020-07-05 2020-09-22 沈阳药科大学 Dammarane sapogenin derivative, preparation method and application

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0680651A (en) * 1991-06-06 1994-03-22 Chugai Pharmaceut Co Ltd Production of triazole-based compound
JPH06340638A (en) * 1993-06-01 1994-12-13 Nippon Peroxide Co Ltd Process for producing 3- (phenylsulfonyl) -1,2,4-triazoles
JPH0753529A (en) * 1993-08-10 1995-02-28 Taoka Chem Co Ltd Method for producing sulfone derivative
US20030060494A1 (en) * 2001-05-18 2003-03-27 Nobuyuki Yasuda Pharmaceutical use of N-carbamoylazole derivatives
CN111690033A (en) * 2020-07-05 2020-09-22 沈阳药科大学 Dammarane sapogenin derivative, preparation method and application

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李正化: "有机药物合成原理", 北京:人民卫生出版社, pages: 809 *

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