Abstract: The present invention is directed to a method for producing amino acids by reacting halogenated carboxylic acid ester (haloacid esters) with a metal cyanate in the presence of an alcohol and by subsequent acidic saponification of the urethane carbonic acid formed. The method is characterized by the metal cyanate being placed at an elevated temperature in an organic solvent and the other reactants being continuously charged into the mixture over a defined time period.

Abstract: The invention relates to a process for the preparation of substituted pyrimidines of formula I, wherein R1, R2, R3, R4 and X are as defined in claim 1, which comprises reacting an amidine of formula II, or a salt thereof, with a 3,3-disubstituted vinylcarbonyl compound of formula III wherein L represent a halogen atom or a group of formula —X—R2, (a) in an inert solvent, in the presence of a base and a compound of formula IV H—X—R2  (IV) in the event that L represent a halogen atom, or (b) in an inert solvent and in the presence of a base, in the event that L represents a group of formula —X—R2.

Abstract: Process for preparing vanillylamine or one of the salts thereof by reacting vanillin with hydroxylamine or the salts thereof in the presence of an organic salt, which may optionally be produced in situ, wherein the reaction is carried out in an inorganic or organic acid as diluent, and subsequently hydrogenating the resulting vanillyloxime with hydrogen in the presence of a suitable catalyst and an organic and/or inorganic acid.

Abstract: The invention relates to a continuous process for preparing dihydropyrones of general formula I, 1

Abstract: The invention relates to a process for the preparation of substituted pyrimidines of formula I, 1

Abstract: The invention relates to a process for the preparation of substituted pyrimidines of formula I, wherein R1, R2, R3, R4 and X are as defined in claim 1, which comprises reacting an amidine of formula II, or a salt thereof, with a 3,3-disubstituted vinylcarbonyl compound of formula III wherein L represent a halogen atom or a group of formula —X—R2, (a) in an inert solvent, in the presence of a base and a compound of formula IV H—X—R2  (IV) in the event that L represent a halogen atom, or (b) in an inert solvent and in the presence of a base, in the event that L represents a group of formula —X—R2.

Abstract: A process for the preparation of dialkyl phenylmalonates of formula I, ##STR1## wherein R, R.sup.1, L.sup.1 and L.sup.2 have the meaning given in the claims which comprises treating an phenylbromide of formula II ##STR2## with a dialkyl malonate of formula III ##STR3## in an inert solvent in the presence of a base and a copper salt, wherein 1.0 mole of the phenylbromide of formula II is treated with the enolate obtained from 2.0 to 4.0 moles of the dialkyl malonate of formula III and 2.0 to 3.8 moles of the base.