Ultrasound promoted N-alkylation of pyrrole using Potassium superoxide (cas 12030-88-5) as base in crown ether
-
Add time:07/28/2019 Source:sciencedirect.com
Ultrasound accelerates the N-alkylation of pyrrole by alkylating reagents using Potassium superoxide (cas 12030-88-5) as base in the presence of 18-crown-6. A much lower yield of N-alkylated pyrrole was realized in the absence of ultrasound. N-alkylating reagents employed for pyrrole are methyl iodide, ethyl bromide, benzyl bromide, as well as acrylonitrile allyl cyanide and methyl acrylate. In an extension of this work, we have found that ultrasound was not necessary for the N-alkylation of indole and alkyl amine, such as diphenyl amine and piperidine with alkyl halides using our reagents. In all cases we observed that the 18-crown-6 catalyzed N-alkylation reaction gives higher yields of N-alkylated products than that without crown ether, when potassium superoxide was used as base. These observations are probably due to the potassium-crown complex which can be released when the reaction goes to completion.
We also recommend Trading Suppliers and Manufacturers of Potassium superoxide (cas 12030-88-5). Pls Click Website Link as below: cas 12030-88-5 suppliers
Prev:Cerium triflate as superoxide radical scavenger to improve cycle life of LiO2 battery
Next:Superoxide Ion Prompted One Pot Multicomponent Synthesis of 1,4-dihydropyridine derivatives) - 【Back】【Close 】【Print】【Add to favorite 】
- Related Information
- Superoxide Ion Prompted One Pot Multicomponent Synthesis of 1,4-dihydropyridine derivatives07/29/2019
- Cerium triflate as superoxide radical scavenger to improve cycle life of LiO2 battery07/27/2019
- On the importance of ion pair formation and the effect of water in potassium–oxygen batteries07/26/2019
-
Health and Chemical more >
-
Related Products
- Potassium (2S,3S)-3-(ethoxycarbonyl)oxirane-2-carboxylate
- Potassium (4-formylphenyl)trifluoroborate
- Potassium (bromomethyl)trifluoroborate
- Potassium (R)-((3-ethoxy-1-methyl-3-oxoprop-1-enyl)amino)(4-hydroxyphenyl)acetate
- Potassium (R)-(4-hydroxyphenyl)((3-methoxy-1-methyl-3-oxoprop-1-enyl)amino)acetate
- Potassium (R)-[(3-ethoxy-1-methyl-3-oxoprop-1-enyl)amino]phenylacetate
- Potassium [(cyanomethyl)thio]acetate
- Potassium 1,2,3,6-tetrahydro-5-nitro-2,6-dioxopyrimidine-4-carboxylate
- Potassium 2,2-dimethyl-1,3-dioxolane-4-carboxylate
- Potassium 2,3,3-trimethyl-3H-indole-5-sulfonate