ketimine


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ketimine

[′ked·ə‚mēn]
(organic chemistry)
An organic compound that contains the divalent group ∫ C=NH; a Schiff base is an example.
References in periodicals archive ?
A suitable amount of acetone (auxiliary solvent) together with powerful agitation are employed in controlling viscosity during the dispersal step; while a blocked diamine (i.e., ketimine) is used as a latent chain extender in order to control the NCO -- NH reaction.
There were 4 common metabolites, that is, phosphate acid, L-phenylalanine, acetoacetic acid, and cystathionine ketimine, found in the serums of patients with CHD showing dampness syndrome and patients with CRF showing dampness syndrome.
DuPont has obtained a patent for a coating composition comprising a crosslinking component that contains a polyketimine having an average of at least two ketimine functionalities per polyketimine molecule and a binder component comprising a polyacetoacetate with a Tg in the range of 40[degrees]-150[degrees]C and having at least two acetoacetate functionalities.
There have been several reports during rounds suggesting ketimines derived from 2, 2, 2-trifluoroethylamine a pro-nucleophile.
[8] have also demonstrated that cobalt dinitrosyl complexes can be utilized for the [3 + 2] annulation of olefins with unsaturated enones and ketimines. Reactions of a series of cobalt dinitrosyl/alkene addition products with conjugate acceptors in the presence of Sc[(OTf).sub.3]/LHMDS formed two new carbon-carbon bonds at the a-carbon positions on the nitrosyl groups of the substrate, leading to unusual tri-and tetracycles, retrocycloaddition of which in the presence of norbomadiene produced functionalized tetrasubstituted bicyclic alkenes.
Westheimer, "Catalysis by molecular sieves in the preparation of ketimines and enamines," Journal of Organic Chemistry, vol.
Imines [11], both aldimines and ketimines due to presence of carbon-nitrogen bond in their molecules, provides a potential site for chemical [12-13] as well as biological [14-15] activity, but very less work has been carried out on synthesis of [alpha],[beta]-unsaturated ketimines.
In addition, cure rates can be lowered by utilizing blocked NHs (i.e., aldimines and ketimines) that become active upon reacting with atmospheric moisture and/or formulating with ASP-based secondary diamines.
Research by BASF AG has shown that incorporating secondary polyether amines in a polyurea RIM system containing ketimines results in increased flowability of the system compared with polyurea/amide RIM and conventional polyurea systems.