ChemInform Abstract: SUBSTITUIERTE 1,1‐DIAMINO‐AETHYLENE

Synthesis and properties of β,β-bisfunctionalised keteneN,N-acetals

“…Similarly, the hydrazino group can replace the good leaving group, viz., CHal 3 . 87 For example, this method was used to obtain alkyl 3,5-diaminopyrazole-4-carboxylates. Cyclisation can involve not only cyano groups but also other functional groups.…”

“…86 Similar replacement of the CCl 3 and CF 3 groups in enamines by the amino groups with the formation vicinal ethylenediamine derivatives has been reported. 87,88 Reactions of trichloromethyldialkylamines 58 with compounds containing reactive methylene groups also result in ketene N,N-acetals. 89 For example, compounds 58 react with malonodi-nitrile to give chloroenamines 59.…”