Direct amidation of acids in a screw reactor for the continuous flow synthesis of amides
| Title | Direct amidation of acids in a screw reactor for the continuous flow synthesis of amides |
| Publication Type | Journal Article |
| Year of Publication | 2023 |
| Authors | Atapalkar, RS, Kulkarni, AA |
| Journal | Chemical Communications |
| Volume | 59 |
| Issue | 60 |
| Pagination | 9231-9234 |
| Date Published | JUL |
| Type of Article | Article |
| ISSN | 1359-7345 |
| Abstract | A simple and efficient solvent-free protocol for continuous flow synthesis of amides at room temperature is developed using easily available starting materials. N-(3-Dimethylaminopropyl)-N & PRIME;-ethylcarbodiimide hydrochloride (EDC.HCl) was used as the reagent for the formation of an amide bond without using any metal catalyst or additives. A jacketed screw reactor when operated over a residence time of 30 300 s helped achieve almost complete conversion. This approach is extended for the synthesis of 36 derivatives and 2 bioactive molecules using different substrates having different aliphatic mono and di-acids as well as aromatic acids, including aromatic hetero-acid compounds and phenyl hydrazine. The target amide was scaled up to 100 g with an average 90% yield. |
| DOI | 10.1039/d3cc02402d |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 4.9 |
