33225-17-1Relevant academic research and scientific papers
Transamidation for the Synthesis of Primary Amides at Room Temperature
Chen, Jiajia,Lee, Sunwoo,Xia, Yuanzhi
supporting information, (2020/05/05)
Various primary amides have been synthesized using the transamidation of various tertiary amides under metal-free and mild reaction conditions. When (NH4)2CO3 reacts with a tertiary amide bearing an N-electron-withdrawing substituent, such as sulfonyl and diacyl, in DMSO at 25 °C, the desired primary amide product is formed in good yield with good funcctional group tolerance. In addition, N-tosylated lactam derivatives afforded their corresponding N-tosylamido alkyl amide products via a ring opening reaction.
Microwave-assisted N-debenzylation of amides with triflic acid
Rombouts, Frederik,Franken, Dennis,Martínez-Lamenca, Carolina,Braeken, Mirielle,Zavattaro, Chiara,Chen, Jinsheng,Trabanco, Andrés A.
experimental part, p. 4815 - 4818 (2010/10/02)
A new and facile microwave-assisted protocol for the debenzylation of N-benzylamides with triflic acid has been developed. Both secondary and tertiary aliphatic or aromatic amides are obtained in moderate to good yields.
CHEMICAL CONSTRUCTS
-
Page/Page column 41; 44, (2008/06/13)
The invention provides a chemical construct for use in solid phase synthesis comprising a solid support Q having linked thereto via a connecting group Y a substrate R; the connecting group Y having first and second cleavage sites which are orthogonally and selectively cleavable; the second cleavage site being selectively cleavable to release the substrate; and the first cleavage site being located at a position between the second cleavage site and the solid support and being selectively cleavable to release a fragment Fr comprising the substrate and at least a portion of the connecting group Y; characterised in that cleavage at the first cleavage site forms or introduces on the chemical fragment Fr at the first cleavage site a moiety comprising a sensitising group G (such as an amino group) which sensitises the chemical fragment Fr to instrumental, e.g. mass spectroscopic, analysis. Also provided are methods of analysis employing the constructs, as well as intermediate constructs.
