Tetrahedron Letters p. 7755 - 7758 (1991)
Update date:2022-08-31
Topics:
Alder, Roger W.
Colclough, David
Mowlam, Rodney W.
Eschweiler-Clarke methylations of both acyclic and cyclic polyamines can lead to methylation products of fragments of the original polyamine; thus 1,5,9,13-tetra-azatridecane yields 1,1,3,3-tetramethylpropanediamine exclusively and 1,5,9-triazacyclododecane gives 45 percent 1,5,9-trimethyl-1,5,9-triazacyclododecane and 45 percent 2,6,10-trimethyl-2,6,10-triazaundecane.
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