Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Synthesis method of aminoethanethiol

A technology of aminoethanethiol and aminoethanethiol, which is applied in the field of synthesis of aminoethanethiol, can solve problems such as easy self-polymerization, and achieve the effect of promoting ring opening and improving product selectivity

Active Publication Date: 2021-04-16
WANHUA CHEM GRP CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a kind of synthetic method of aminoethanethiol, this method solves the problem of easy self-polymerization after ring-opening in the present ethylene sulfide preparation process by introducing novel catalyst, has improved productive rate, has also reduced Cost of production

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045]Add 20g of zirconium oxynitrate dihydrate and 100mL of absolute ethanol into a round bottom flask and mix evenly, then add 20g of ethylene glycol and stir for 30min at room temperature, then add 0.25g / 6.89ml of ammonium molybdate solution, then heated up to 80°C and stirred for 30min, then added 10% dilute ammonia water dropwise, during the addition process, the solution would gradually become turbid, when the pH value of the reaction system reached 9, stop adding ammonia water dropwise , and then continue to stir for 24 hours, and filter to obtain a stable molybdenum-doped nano-zirconia sol. After washing and drying, place it in a muffle furnace at 400°C for calcination for 8 hours to obtain molybdenum-doped nano-zirconia sol.

[0046] Add molybdenum-doped nanocarriers and 250mL water into a round-bottomed flask, stir at room temperature for 30min, then raise the temperature to 50°C, continue stirring for 30min, add 58.97ml of 0.25mol / L precursor nickel nitrate to the r...

Embodiment 2

[0050] Add 20g of tetrabutyl titanate and 100mL of absolute ethanol into a round bottom flask and mix well, then add 50mL of deionized water and stir at room temperature for 45min, then raise the temperature to 70°C and stir for 30min, then add HNO dropwise 3 , during the addition process, the solution will gradually become turbid, when HNO 3 When the molar ratio to tetrabutyl titanate is 4, stop adding nitric acid; after stirring for 2 hours, add 1.53ml of 0.25g / mL ammonium molybdate solution to the resulting colloidal solution according to the doping amount of molybdenum element, and continue stirring 24h, filtered to obtain stable molybdenum-doped nano-TiO 2 The sol was washed and dried, and then calcined in a muffle furnace at 400°C for 7 hours to obtain molybdenum-doped nano-titanium dioxide.

[0051] Add molybdenum-doped nanocarriers and 250mL water into a round bottom flask, stir at room temperature for 30min, then raise the temperature to 50°C, continue stirring for 3...

Embodiment 3

[0054] Add 20g of zirconyl nitrate dihydrate and 100mL of absolute ethanol into a round bottom flask and mix evenly, then add 20g of ethylene glycol and stir for 60min at room temperature, then add 0.25g / 7.65 mL of ammonium molybdate solution, then warm up to 80°C and stir for 30 minutes, then add 10% dilute ammonia water dropwise. During the addition process, the solution will gradually become turbid. When the pH value of the reaction system reaches 8, stop adding ammonia water dropwise , and then continue to stir for 24 hours, and filter to obtain a stable molybdenum-doped nano-zirconia sol. After washing and drying, place it in a muffle furnace at 400°C for calcination for 6 hours to obtain molybdenum-doped nano-zirconia sol.

[0055] Add molybdenum-doped nanocarriers and 250 mL of water into a round-bottomed flask, stir at room temperature for 30 min, then raise the temperature to 50 °C, and continue stirring for 30 min. According to the loading capacity of the catalyst, a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a synthesis method of a taurine intermediate aminoethanethiol. According to the method, epithioethane and an ammonia compound are subjected to an addition reaction under the catalysis of a modified supported metal catalyst to obtain aminoethanethiol. According to the method, the problem that the epithioethane is easy to self-polymerize after ring opening is solved, the yield is improved, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the field of preparation of nutritional chemical intermediates, and in particular relates to a synthesis method of aminoethanethiol. Background technique [0002] Taurine, also known as 2-aminoethanesulfonic acid, is a sulfur-containing non-protein amino acid. Widely present in tissue cells and abundant in the brain. It has the functions of promoting the growth and development of the nervous system and cell differentiation, preventing cardiovascular diseases, affecting lipid absorption, improving immunity, and maintaining normal reproductive needs; therefore, it is widely used in medical treatment, health care, food, etc., and has a good market prospect. [0003] As an important intermediate in the synthesis of taurine, aminothiol was discovered and studied in recent years. In 2007, Hu, L.B. et al. reported the use of thioacetic acid as a nucleophile to attack polysubstituted aziridines to generate N-acetyl substituted aminot...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C07C319/02C07C323/25B01J23/883B01J23/885B01J37/08B01J37/03
CPCY02P20/584
Inventor 蔺海政桂振友郭斌孔令晓丰茂英陈来中张永振
Owner WANHUA CHEM GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com