Abstract: 1-Amino-1-cyanamido-2,2-dicyanoethylene, sodium salt is prepared by a process which comprises reacting malononitrile with sodium dicyanamide at an elevated temperature and in the presence of an aprotic, dipolar solvent. The subject compound is useful as an intermediate to prepare substituted pyrimidines.

Abstract: Dialkyl (N-cyanoimido) carbonates are prepared in good yield in a non-aqueous solvent by a process which comprises either (a) adding a cyanogen halide at a controlled rate to a reactor containing an unsubstituted or substituted dialkyl imidocarbonate, an inorganic base and/or a trialkyl amine, or (b) by adding a trialkyl amine to a solution of the unsubstituted or substituted dialkyl imidocarbonate and a cyanogen halide. The dialkyl imidocarbonate precursors are prepared by using a stoichiometric ratio (2:1) of alcohol to cyanogen halide in the presence of an acid acceptor and in a non-aqueous solvent.Dialkyl (N-cyanoimido)carbonates are useful as intermediates for pesticides and pharmaceuticals.

Abstract: 2-Amino-4-alkoxy-s-triazines which are substituted by an alkyl, aryl or aralkyl moiety in the 6-position and which are useful as pharmaceutical agents and as intermediates for herbicides, dyes and optical brighteners are prepared by reacting a dialkyl (N-cyanoimido)carbonate with an amidine salt in the presence of an inert solvent and a base.

Abstract: A modified novel process for preparing cyclopropylamine from .gamma.-butyrolactone is described. The .gamma.-butyrolactone ring is cleaved with a hydrohalide in the presence of a novel catalyst comprising an aqueous sulfuric acid solution. The 4-chlorobutyric acid, thus formed is converted into a hindered chlorobutyrate ester. The hindered ester based on secondary and tertiary alkanols of eight or less carbon atoms, is cyclized to form the hindered cyclopropanecarboxylate ester by a novel reaction medium consisting of solid caustic in a water-immiscible solvent and a phase transfer catalyst. The hindered cyclopropanecarboxylate ester is ammoniated to form cyclopropanecarboxamide by a novel catalyst comprising an alkali metal salt of a polyol having hydroxy groups on adjacent carbons. The carboxamide formed in substantially quantitative yields is converted to cyclopropylamine by a modified Hofmann reaction utilizing continuous degradation of the intermediate with simultaneous distillation.

Abstract: Pyrimidyl-thio and dithio-phosphoric acid esters of the formula ##STR1## wherein R.sub.1 represents a C.sub.3 to C.sub.6 cycloalkyl group,R.sub.2 and R.sub.3 each represent a C.sub.1 to C.sub.5 alkyl group andX and Y each represent oxygen or sulfur,Processes for their manufacture, and their use in pest control.