An exception of eschweiler-clarke methylation: Cyclocondensation of α-amino amides with formaldehyde and formic acid
作者:Fu-Lin Chen、Kuangsen Sung
DOI:10.1002/jhet.5570410507
日期:2004.9
Eschweiler-Clarke methylation was found for α-amino amides. The α-amino amides on treatment with formaldehyde and formicacid produce cyclocondensation products, imidazolidin-4-ones, but N-methylation process becomes important when three substituents of the α-amino amides are very bulky. On the other hand, N-methylation is the only product for Eschweiler-Clarke methylation of the α-amino amides with N,N-disubstituted