Bleaching (detergent) compositions are disclosed comprising a peroxide bleaching agent and a novel cationic peroxyacid bleach precursor having at least one of the following groups (A) and (B) :
wherein R₁ and R₂ are each individually H, or a substituent group containing at least one carbon atom, provided that R₁ and R₂ are not both H.
The novel bleach precursor of the cationic nitrile type shows no tendency to deliquesce under normal atmospheric conditions.
C-C - connective synthesis of α-dialkylamino - ketones from aldehydes and sec.-amines
作者:Dieter Enders、Hermann Lotter
DOI:10.1016/s0040-4039(00)86910-5
日期:1982.1
A simple and efficient 3 - step synthesis of α-dialkylamino -ketones 3 starting from aldehydes and sec.-amines is described. The unsymmetrically aminoketones are obtained as pure regioisomers viareaction of metalated α-aminonitriles 1 with aldehydes, followed by thermal HCN-elimination/tautomerization.