N-Alkoxymethylation of Secondary Amides, Sulfonamides and Phosphamides Using Dialkoxymethanes in the Presence of Lewis Acids
作者:Witold Danikiewicz、Rafa Szmigielski
DOI:10.1055/s-2003-37116
日期:——
A convenient and efficient one-pot synthesis of N-alkoxymethyl derivatives of secondary amides, sulfonamides and phosphamides in reaction with the appropriate dialkoxymethanes in the presence of a Lewisacid is described. In this method the use of toxic and carcinogenic chloromethyl alkyl ethers was eliminated.
Similarities and differences in the electron ionization-induced fragmentation of structurally relatedN-alkoxymethyl lactams and sultams
作者:Rafa? Szmigielski、Witold Danikiewicz
DOI:10.1002/jms.790
日期:2005.3
Unimolecularfragmentation patterns of the molecularions of selected lactams and sultams bearing alkoxymethyl group at the nitrogen atom were studied. The main common fragmentation reaction observed for all compounds studied in this work is the elimination of an aldehyde molecule. This reaction is considered to proceed via two different mechanisms. For lactams, hydrogen rearrangement within an alkoxymethyl